Cita APA

Collins, J. T., & Collins, S. L. (1993). Amphibians and reptiles in Kansas (3. edition rev.). Lawrence, Kan.: University of Kansas, Museum of Natural History.

Citación estilo Chicago

Collins, Joseph T., y Suzanne L. Collins. Amphibians and Reptiles in Kansas. 3. edition rev. Lawrence, Kan.: University of Kansas, Museum of Natural History, 1993.

Cita MLA

Collins, Joseph T., y Suzanne L. Collins. Amphibians and Reptiles in Kansas. 3. edition rev. Lawrence, Kan.: University of Kansas, Museum of Natural History, 1993.