APA (7e ed.) Bronvermelding

Não informado. (2001). Yearbook of the Massachusetts Audubon Society. Massachusetts Audubon Society.

Chicago (17e ed.) Bronvermelding

Não informado. Yearbook of the Massachusetts Audubon Society. Lincoln, Mass: Massachusetts Audubon Society, 2001.

MLA (8e ed.) Bronvermelding

Não informado. Yearbook of the Massachusetts Audubon Society. Massachusetts Audubon Society, 2001.

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