APA (7e ed.) Bronvermelding

Não informado. (2001). Bulletin of the Astronomical Institutes of Czeschoslovakia. Astronomical Institutes of Czeschoslovakia.

Chicago (17e ed.) Bronvermelding

Não informado. Bulletin of the Astronomical Institutes of Czeschoslovakia. Prague: Astronomical Institutes of Czeschoslovakia, 2001.

MLA (8e ed.) Bronvermelding

Não informado. Bulletin of the Astronomical Institutes of Czeschoslovakia. Astronomical Institutes of Czeschoslovakia, 2001.

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