APA (7e ed.) Bronvermelding

Não informado. (1981). Colonial waterbirds. Colonial Waterbirds Society.

Chicago (17e ed.) Bronvermelding

Não informado. Colonial Waterbirds. De Leon Springs, Fla: Colonial Waterbirds Society, 1981.

MLA (8e ed.) Bronvermelding

Não informado. Colonial Waterbirds. Colonial Waterbirds Society, 1981.

Let op: Deze citaties zijn niet altijd 100% accuraat.