Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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