APA

Duellman W. E., Symposium on the South American Herpetofauna, . (1979). The South American herpetofauna. Lawrence, Kan: Museum of Natural History, University of Kansas.

Chicago

Duellman William Edward, Symposium on the South American Herpetofauna, . 1979. The South American herpetofauna. Lawrence, Kan: Museum of Natural History, University of Kansas.

Harvard

Duellman W. E., Symposium on the South American Herpetofauna, . (1979). The South American herpetofauna. Lawrence, Kan: Museum of Natural History, University of Kansas.

MLA

Duellman William Edward, Symposium on the South American Herpetofauna, . The South American herpetofauna. Lawrence, Kan: Museum of Natural History, University of Kansas. 1979.