APA (7th ed.) Citation

Moulton, F. R. (1931). Astronomy. Macmillan.

Chicago Style (17th ed.) Citation

Moulton, Forest Ray. Astronomy. New York: Macmillan, 1931.

MLA (9th ed.) Citation

Moulton, Forest Ray. Astronomy. Macmillan, 1931.

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