APA (7th ed.) Citation

Whipple, F. L. (1968). Earth, moon, and planets (3d ed.). Harvard University Press.

Chicago Style (17th ed.) Citation

Whipple, Fred L. Earth, Moon, and Planets. 3d ed. Cambridge, Mass.: Harvard University Press, 1968.

MLA (9th ed.) Citation

Whipple, Fred L. Earth, Moon, and Planets. 3d ed. Harvard University Press, 1968.