APA (7e ed.) Bronvermelding

Robbins. Birds of Maryland, Delaware, and the District of Columbia. Johns Hopkins University Press.

Chicago (17e ed.) Bronvermelding

Robbins. Birds of Maryland, Delaware, and the District of Columbia. Johns Hopkins University Press.

MLA (9e ed.) Bronvermelding

Robbins. Birds of Maryland, Delaware, and the District of Columbia. Johns Hopkins University Press.

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