1. Anon. Twilight of The Animals. New Orleans, Upton, 1979.
2. Propagation and management of endangered species at the Patuxent Wildlife Research Center. American Association of Zoo Veterinarians Annual Proceedings 23-33, 1977
3. ; The role of captive propagation in preserving endangered species, in Nongame and Endangered Wildlife Symposium (1981). ed. Georgia Department of Natural Resources and Georgia Chapter of the Wildlife Society. 1982.
4. An overview of captive propagation, pp. 199-208 in Conservation Biology: An Evolutionary, Ecological Perspective. eds. Sunderland, Massachusetts, Sinauer, 1980.
5. ; Extinction. New York, Random House, 1981