APA (7th ed.) Citation

Whipple, F. L. (1971). Earth, moon and planets / by F.L. Whipple (3rd ed.). Penguin.

Chicago Style (17th ed.) Citation

Whipple, F. L. Earth, Moon and Planets / by F.L. Whipple. 3rd ed. Penguin, 1971.

MLA (9th ed.) Citation

Whipple, F. L. Earth, Moon and Planets / by F.L. Whipple. 3rd ed. Penguin, 1971.

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