APA aipamena

Underwood, G. (1967). A contribution to the classification of snakes. British Museum (Natural History).

Chicago Style aipamena

Underwood, Garth. A Contribution to the Classification of Snakes. London: British Museum (Natural History), 1967.

MLA aipamena

Underwood, Garth. A Contribution to the Classification of Snakes. British Museum (Natural History), 1967.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.