APA Citation

Marshak, S., & Prothero, D. R. (2001). Earth: Portrait of a planet. New York: Norton.

Chicago Style Citation

Marshak, Stephen, and Donald R. Prothero. Earth: Portrait of a Planet. New York: Norton, 2001.

MLA Citation

Marshak, Stephen, and Donald R. Prothero. Earth: Portrait of a Planet. New York: Norton, 2001.

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