Cita APA (7a ed.)

Allan, T., & Warren, A. (1993). Deserts: The encroaching wilderness : a world conservation atlas. Oxford University Press.

Cita Chicago Style (17a ed.)

Allan, Tony, y Andrew Warren. Deserts: The Encroaching Wilderness : A World Conservation Atlas. New York: Oxford University Press, 1993.

Cita MLA (9a ed.)

Allan, Tony, y Andrew Warren. Deserts: The Encroaching Wilderness : A World Conservation Atlas. Oxford University Press, 1993.