The following literature references are from Amphibian Declines: The Conservation Status of United States Species, edited by Michael Lannoo (©2005 by the Regents of the University of California), used with permission of University of California Press. The book is available from UC Press.

Ideker, J. 1976. Tadpole thermoregulatory behavior facilitates grackle predation. Texas Journal of Science 27:244–245.
Ideker, J. 1979. Adult Cybister fimbriolatus are predaceous (Coleoptera: Dytiscidae). Coleopterists Bulletin 33:41–44.
Ildos, A.S. and N. Ancona. 1994. Analysis of amphibian habitat preferences in a farmland area (Po Plain, northern Italy). Amphibia-Reptilia 15:307–316.
Inger, R. and H. Marx. 1961. The food of amphibians. Exploration du Parc National de l'Upemba. Mission G. F. De Witte, Fascicule 64:3–85.
Inger, R.F. 1962. On the terrestrial origin of frogs. Copeia 1962:835–836.
Inger, R.F. 1994. Microhabitat description. Pp. 60–65. In Heyer,W.R., M.A. Donnelly, R.W. McDiarmid, L.C. Hayek and M.S. Foster (Eds.), Measuring and Monitoring Biological Diversity: Standard Methods for Amphibians. Smithsonian Institution Press, Washington, D.C.
Ingermann, R.L., D.C. Bencic and V.P. Eroschenko. 1997. Methoxychlor alters hatching and larval startle response in the salamander Ambystoma macrodactylum. Bulletin of Environmental Contamination and Toxicology 59:815–821.
Ingersol, C.A., R.F. Wilkinson, C.L. Peterson and R.H. Ingersol. 1991. Histology of the reproductive organs of Cryptobranchus alleganiensis (Caudata: Cryptobranchidae) in Missouri. Southwestern Naturalist 36:60–66.
Ingle, D. and D. McKinley. 1978. Effects of stimulus configuration on elicited prey catching by the marine toad (Bufo marinus). Animal Behaviour 26:885–891.
Ingles, L.G. 1932a. Four new species of Heamatoloechus (Trematoda) from California. University of California Publications in Zoology 37:189–201.
Ingles, L.G. 1932b. Cephalogonimus brevicirrus, a new species of trematode from the intestine of Rana aurora from California. University of California Publications in Zoology 37:203–210.
Ingles, L.G. 1933a. The specificity of frog flukes. Science 78:168.
Ingles, L.G. 1933b. Studies on the structure and life-history of Zeugorchis syntomentera Sumwalt a trematode from the snake Thamnophis ordinoides from California. University of California Publications in Zoology 39:163–176.
Ingles, L.G. 1933c. Studies on the structure and life-history of Ostiolum oxyorchis (Ingles) from the California red-legged frog Rana aurora draytoni. University of California Publications in Zoology 39:135–162.
Ingles, L.G. 1935. Notes on the development of a heterophyid trematode. Transactions of the American Microscopical Society 54:19–21.
Ingles, L.G. 1936. Worm parasites of California Amphibia. Transactions of the American Microscopical Society 55:73–92.
Ingram, G.J. and K.R. McDonald. 1993. An update on the decline of Queensland's frogs. Pp. 297–303. In Lunney, D. and D. Ayers (Eds.), Herpetology in Australia: A Diverse Discipline. Surrey Beatty and Sons, Sydney, New South Wales, Australia.
Ingram, W.M. and E.C. Raney. 1943. Additional studies on the movement of tagged bullfrogs, Rana catesbeiana Shaw. American Midland Naturalist 29:239–241.
Institute of Medicine (IOM), Board of International Health. 1997. America's Vital Interest in Global Health. National Academy Press, Washington, D.C.
Integrated Taxonomic Information System (IT IS) Database. 2002. http://www.itis.usda.gov/itis_query.html.
International Association of Microbiological Societies. 1992. International Code of Nomenclature of Bacteria, and Statutes of the International Committee on Systematic Bacteriology, and Statutes of the Bacteriology and Applied Microbiology Section of the International Union of Microbiological Societies: Bacteriological Code, 1990 revision. American Society of Microbiology, Washington, D.C.
International Botanical Congress. 2000. International Code of Botanical Nomenclature. Königstein: Koeltz Scientific Books. July–August 1999. Edition adopted by the 16th International Botanical Congress, St. Louis, Missouri.
International Commission on Zoological Nomenclature. 1999. International Code of Zoological Nomenclature. 4th edition. International Trust for Zoological Nomenclature, London, England.
Ireland, P.H. 1973. Overwintering of larval spotted salamanders, Ambystoma maculatum (Caudata) in Arkansas. Southwestern Naturalist 17:435–437.
Ireland, P.H. 1974. Reproduction and larval development of the dark-sided salamander, Eurycea longicauda melanopleura. Herpetologica 30:338–343.
Ireland, P.H. 1976. Reproduction and larval development of the gray-bellied salamander Eurycea multiplicata grisegaster. Herpetologica 32:233–238.
Ireland, P.H. 1979. Eurycea longicauda. Pp. 221.1–221.4. Catalogue of American Amphibians and Reptiles. Society for the Study of Amphibians and Reptiles. St. Louis, Missouri.
Ireland, P.H. 1989. Larval survivorship in two populations of Ambystoma maculatum. Journal of Herpetology 23:209–215.
Ireland, P.H. 1991. Separate effects of acid-derived anions and cations on growth of larval salamanders of Ambystoma maculatum. Copeia 1991:132–137.
Irwin, J.T., J.P. Costanzo and R.E. Lee. 1999. Terrestrial overwintering in the northern cricket frog, Acris crepitans. Canadian Journal of Zoology 77:1240–1246.
Irwin, K.J. 1993. A preliminary survey, with management recommendations on the herpetofauna of the Lower Rio Grande Valley National Wildlife Refuge. U.S. Fish Wildlife Service, Final report, Alamo, Texas.
Issacs, J.S. 1971. Temporal stability of vertebral stripe color in a cricket frog population. Copeia 1971:551–552.
IUCN (World Conservation Union). 1980. World Conservation Strategy. Gland, Switzerland.
Iverson, J.B. 1992. Global correlates of species richenss in turtles. Herpetological Journal 2:77–81.
Iverson, J.B. and C.R. Etchberger. 1989. The distributions of the turtles in Florida. Florida Scientist 52:119–144.