APA

Zaher H., . (1999). Hemipenial morphology of the South American xenodontine snakes, with a proposal for a monophyletic xenodontinae and a reappraisal of colubroid hemipenes. Estados Unidos: Bulletin of the American Museum of Natural History.

Chicago

Zaher Hussam, . 1999. Hemipenial morphology of the South American xenodontine snakes, with a proposal for a monophyletic xenodontinae and a reappraisal of colubroid hemipenes. Estados Unidos: Bulletin of the American Museum of Natural History.

Harvard

Zaher H., . (1999). Hemipenial morphology of the South American xenodontine snakes, with a proposal for a monophyletic xenodontinae and a reappraisal of colubroid hemipenes. Estados Unidos: Bulletin of the American Museum of Natural History.

MLA

Zaher Hussam, . Hemipenial morphology of the South American xenodontine snakes, with a proposal for a monophyletic xenodontinae and a reappraisal of colubroid hemipenes. Estados Unidos: Bulletin of the American Museum of Natural History. 1999.