APA (7e ed.) Bronvermelding

Não informado. (1962). National Wildlife. National Wildlife Federation.

Chicago (17e ed.) Bronvermelding

Não informado. National Wildlife. Washington: National Wildlife Federation, 1962.

MLA (8e ed.) Bronvermelding

Não informado. National Wildlife. National Wildlife Federation, 1962.

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