APA (7th ed.) Citation

Whipple, F. L. (1941). Earth, moon, and planets (third edition.). Harvard University Press.

Chicago Style (17th ed.) Citation

Whipple, Fred L. Earth, Moon, and Planets. third edition. Cambridge, MA: Harvard University Press, 1941.

MLA (8th ed.) Citation

Whipple, Fred L. Earth, Moon, and Planets. third edition. Harvard University Press, 1941.