APA (7th ed.) Zitazioa

Huggett, R., & Hugget, R. (2004). Physical geography: A human perspective. Arnold.

Chicago Style (17th ed.) Zitazioa

Huggett, Richard, eta Richard Hugget. Physical Geography: A Human Perspective. London: Arnold, 2004.

MLA (9th ed.) Zitazioa

Huggett, Richard, eta Richard Hugget. Physical Geography: A Human Perspective. Arnold, 2004.