Citazione Stile APA (7a Edizione)

McKnight, T. L., & Hess, D. (2008). Physical geography. Pearson Education.

Citazione stile Chigago Style (17a edizione)

McKnight, Tom L., e Darrel Hess. Physical Geography. New York: Pearson Education, 2008.

Citatione MLA (9a ed.)

McKnight, Tom L., e Darrel Hess. Physical Geography. Pearson Education, 2008.