APA (7e ed.) Bronvermelding

Não informado. (1969). Bulletin of the American Astronomical Society. American Institute of Physics.

Chicago (17e ed.) Bronvermelding

Não informado. Bulletin of the American Astronomical Society. New York: American Institute of Physics, 1969.

MLA (8e ed.) Bronvermelding

Não informado. Bulletin of the American Astronomical Society. American Institute of Physics, 1969.

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