APA (7e ed.) Bronvermelding

Não informado. (1888). National Geographic Magazine. National Geographic Society.

Chicago (17e ed.) Bronvermelding

Não informado. National Geographic Magazine. Washington: National Geographic Society, 1888.

MLA (8e ed.) Bronvermelding

Não informado. National Geographic Magazine. National Geographic Society, 1888.

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