APA (7e ed.) Bronvermelding

Não informado. (1898). Bulletin of the Astronomical Observatory of Harvard University. Astronomical Observatory of Harvard University.

Chicago (17e ed.) Bronvermelding

Não informado. Bulletin of the Astronomical Observatory of Harvard University. Cambridge, Mass: Astronomical Observatory of Harvard University, 1898.

MLA (8e ed.) Bronvermelding

Não informado. Bulletin of the Astronomical Observatory of Harvard University. Astronomical Observatory of Harvard University, 1898.

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