Instituto Brasileiro de Informação em Ciência e Tecnologia

APA (7 ম সংস্করণ) উদ্ধৃতি

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

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

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