APA(7版)引用形式

Não informado. (1911). Contributions from the Princeton University Observatory. Princeton University Observatory.

Chicagoスタイル(17版)引用形式

Não informado. Contributions from the Princeton University Observatory. Princeton, NJ: Princeton University Observatory, 1911.

MLA(8版)引用形式

Não informado. Contributions from the Princeton University Observatory. Princeton University Observatory, 1911.

警告: この引用は必ずしも正確ではありません.