APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.