North American tortoises :
conservation and ecology /
edited by R. Bruce Bury in cooperation with World Wildlife Fund

APA Citation

Bury, R. Bruce., World Wildlife Fund. (1982). North American tortoises: conservation and ecology. Washington, D.C.: U.S. Dept. of the Interior, Fish and Wildlife Service.

MLA Citation

Bury, R. Bruce, and World Wildlife Fund. North American Tortoises: Conservation And Ecology. Washington, D.C.: U.S. Dept. of the Interior, Fish and Wildlife Service, 1982.

Warning: These citations may not always be complete (especially for serials).