Cita APA

Armstrong, B. L., & Murphy, J. B. (1979). The Natural History of Mexican Rattlesnake.

Citación estilo Chicago

Armstrong, Barry L., y James B. Murphy. The Natural History of Mexican Rattlesnake. 1979.

Cita MLA

Armstrong, Barry L., y James B. Murphy. The Natural History of Mexican Rattlesnake. 1979.