APA (7th ed.) Citation

(1925). Harvard Observatory Monographs: Harlow Shapley, Editor. The Observatory.

Chicago Style (17th ed.) Citation

Harvard Observatory Monographs: Harlow Shapley, Editor. Cambridge, Massachusetts: The Observatory, 1925.

MLA (9th ed.) Citation

Harvard Observatory Monographs: Harlow Shapley, Editor. The Observatory, 1925.

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