Dyfyniad APA

ebrary, Inc, Mullin, S. J., & Seigel, R. A. (2009). Snakes: Ecology and conservation. Comstock Pub. Associates/Cornell University Press.

Dyfyniad Arddull Chicago

ebrary, Inc, Stephen J. Mullin, and Richard A. Seigel. Snakes: Ecology and Conservation. Ithaca: Comstock Pub. Associates/Cornell University Press, 2009.

Dyfyniad MLA

ebrary, Inc, et al. Snakes: Ecology and Conservation. Comstock Pub. Associates/Cornell University Press, 2009.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.