Dyfyniad APA

Lack, D. L. (1968). Ecological adaptations for breeding in birds. Methuen.

Dyfyniad Arddull Chicago

Lack, David Lambert. Ecological Adaptations for Breeding in Birds. London: Methuen, 1968.

Dyfyniad MLA

Lack, David Lambert. Ecological Adaptations for Breeding in Birds. Methuen, 1968.

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