APA (7e ed.) Bronvermelding

Não informado. (1935). Drama of the skies. American Museum of Natural History, Hayden Planetarium.

Chicago (17e ed.) Bronvermelding

Não informado. Drama of the Skies. New York: American Museum of Natural History, Hayden Planetarium, 1935.

MLA (8e ed.) Bronvermelding

Não informado. Drama of the Skies. American Museum of Natural History, Hayden Planetarium, 1935.

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