Não informado. (1898). Annals of Lowell Observatory, Flagstaff, Arizona. Lowell Observatory.
Chicagoスタイル(17版)引用形式Não informado. Annals of Lowell Observatory, Flagstaff, Arizona. Boston, Mass: Lowell Observatory, 1898.
MLA(8版)引用形式Não informado. Annals of Lowell Observatory, Flagstaff, Arizona. Lowell Observatory, 1898.
警告: この引用は必ずしも正確ではありません.