APA (7e ed.) Bronvermelding

Não informado. (1915). Annals of the Dearborn Observatory of the Northwestern University. Dearborn Observatory of the Northwestern University.

Chicago (17e ed.) Bronvermelding

Não informado. Annals of the Dearborn Observatory of the Northwestern University. Evanston, Ill: Dearborn Observatory of the Northwestern University, 1915.

MLA (8e ed.) Bronvermelding

Não informado. Annals of the Dearborn Observatory of the Northwestern University. Dearborn Observatory of the Northwestern University, 1915.

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