Não informado. (1898). Bulletin of the Astronomical Observatory of Harvard University. Astronomical Observatory of Harvard University.
Chicago-Zitierstil (17. Ausg.)Não informado. Bulletin of the Astronomical Observatory of Harvard University. Cambridge, Mass: Astronomical Observatory of Harvard University, 1898.
MLA-Zitierstil (8. Ausg.)Não informado. Bulletin of the Astronomical Observatory of Harvard University. Astronomical Observatory of Harvard University, 1898.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.