Cita APA

Upton, W. B., & Upton, W. B. (1970). Landforms and topographic maps: Illustrating landforms of the Continental United States. New York, New York: Willey.

Citación estilo Chicago

Upton, William Bayly, y William Bayly Upton. Landforms and Topographic Maps: Illustrating Landforms of the Continental United States. New York, New York: Willey, 1970.

Cita MLA

Upton, William Bayly, y William Bayly Upton. Landforms and Topographic Maps: Illustrating Landforms of the Continental United States. New York, New York: Willey, 1970.