Cita APA (7a ed.)

McKnight, T. L., & Hess, D. Physical geography: A landscape appreciation (6a ed.).

Cita Chicago Style (17a ed.)

McKnight, Tom L., y Darrel Hess. Physical Geography: A Landscape Appreciation. 6a ed.

Cita MLA (8a ed.)

McKnight, Tom L., y Darrel Hess. Physical Geography: A Landscape Appreciation. 6a ed.