APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.