APA (7e ed.) Bronvermelding

Não informado. (1877). Observatory: A monthly review of astronomy. Royal Greenwich Observatory.

Chicago (17e ed.) Bronvermelding

Não informado. Observatory: A Monthly Review of Astronomy. Sussex, Inglaterra: Royal Greenwich Observatory, 1877.

MLA (8e ed.) Bronvermelding

Não informado. Observatory: A Monthly Review of Astronomy. Royal Greenwich Observatory, 1877.

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