APA (7e ed.) Bronvermelding

Não informado. (1903). Bulletin of the Lowell Observatory. Lowell Observatory.

Chicago (17e ed.) Bronvermelding

Não informado. Bulletin of the Lowell Observatory. Flagstaff, Ariz: Lowell Observatory, 1903.

MLA (8e ed.) Bronvermelding

Não informado. Bulletin of the Lowell Observatory. Lowell Observatory, 1903.

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