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1 Allen, E. R. 1938. Notes on Wright's bullfrog, Rana heckscheri (Wright). Copeia 1938:50.
2 Allen, E. R., and W. T. Neill. 1954. Bullfrogs of Florida. Florida Wildlife 7(10):2021, 40.
3 Altig, R. 1972. Notes on the larvae and postmetamorphic tadpoles of four Hyla and three Rana with notes on tadpole color patterns. Journal of the Elisha Mitchell Scientific Society 88:113119.
4 Anonymous. n.d. Cross Florida greenbelt state recreation and conservation area management plan. Volume IV. Report on biological issues. Report for Florida Department of Natural Resources and Canal Authority of State of Florida, University Planning Team, Department Landscape Architecture, College of Architecture, University of Florida, Gainesville, Florida, USA. 163pp.
5 Burgess, G. H., and R. Franz. 1978. Zoogeography of the aquatic fauna of the St. Johns River system with comments on adjacent peninsular faunas. American Midland Naturalist 100:160170.
6 Carr, A. F., Jr. 1940. A contribution to the herpetology of Florida. University of Florida Publications, Biological Sciences 3:1118.
7 Clark, V. C. 2001. Rana heckscheri (river frog). Ectoparasites. Herpetological Review 32:36.
8 Cooley, L. S. 1983. Winter food habits and factors influencing the winter diet of river otter in north Florida. M.S. Thesis, University of Florida, Gainesville, Florida, USA. 51pp.
9 Goin, C. J., and L. H. Ogren. 1956. Parasitic copepods (Argulidae) on amphibians. Journal of Parasitology 42:154.
10 Hansen, K. L. 1951. An investigation of native Florida male Salientia as test animals for early pregnancy diagnosis. Quarterly Journal of the Florida Academy of Sciences 14:231236.
11 Hansen, K. L. 1957. Movements, area of activity, and growth of Rana heckscheri. Copeia 1957:274277.
12 Harper, F. 1935. Records of amphibians in the southeastern states. American Midland Naturalist 16:275310.
13 Lee, D. S., and R. A. Sanderson. 1970. Comments on the distribution of three species of frogs in Florida. Florida Naturalist 43:23.
14 Lee, D. S., J. B. Funderburg, and L. R. Franz. 1974. Growth and feeding behavior in the endemic Florida scrub lizard, Sceloporus woodi Stejneger. Bulletin of the Maryland Herpetological Society 10:1619.
15 Lodato, M. J. 1974. Geographic distribution: Rana heckscheri (river frog). Herpetological Review 5:20.
16 Means, D. B. 1976. Survey of the status of amphibians and reptiles of the Ocala National Forest, Florida. Unpublished Report to the U.S. Forest Service. 43pp.
17 Neill, W. T. 1961. River frog swallows eastern diamondback rattlesnake. Bulletin of the Philadelphia Herpetological Society 9(1):19.
18 Neill, W. T. 1968. Florida frogs: from pond to pan. Florida Wildlife 21(8):1417.
19 Punzo, F. 1991. Group learning in tadpoles of Rana heckscheri (Anura: Ranidae). Journal of Herpetology 25:214217.
20 Sanders, A. E. 1984. Rana heckscheri. River frog. Catalogue of American Amphibians and Reptiles 348.12.
21 Wright, A. H. 1924. A new bullfrog (Rana heckscheri) from Georgia and Florida. Proceedings of the Biological Society of Washington 37:141152.
22 Wright, A. H. 1935. Some rare amphibians and reptiles of the United States. Proceedings of the National Academy of Sciences 21:340345.
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