APA (7e ed.) Bronvermelding

Não informado. (1976). Comments on astrophysics. Gordon and Breach.

Chicago (17e ed.) Bronvermelding

Não informado. Comments on Astrophysics. New York: Gordon and Breach, 1976.

MLA (8e ed.) Bronvermelding

Não informado. Comments on Astrophysics. Gordon and Breach, 1976.

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