APA (7th ed.) Citation

Harvard College Observatory. (1856). Annals of the Astronomical Observatory of Harvard College. Hetcalf and Co..

Chicago Style (17th ed.) Citation

Harvard College Observatory. Annals of the Astronomical Observatory of Harvard College. Cambridge [Mass.]: Hetcalf and Co., 1856.

MLA (9th ed.) Citation

Harvard College Observatory. Annals of the Astronomical Observatory of Harvard College. Hetcalf and Co., 1856.

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