APA (7th ed.) Citation

Harvard College Observatory. (1909). Annals of the Astronomical Observatory of Harvard College. Observatory.

Chicago Style (17th ed.) Citation

Harvard College Observatory. Annals of the Astronomical Observatory of Harvard College. Cambridge, Mass: Observatory, 1909.

MLA (9th ed.) Citation

Harvard College Observatory. Annals of the Astronomical Observatory of Harvard College. Observatory, 1909.

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