Cita APA (7a ed.)

Middleton, N., & Thomas, D. (1997). World atlas of desertification (2nd ed.). Arnold.

Cita Chicago Style (17a ed.)

Middleton, Nick, y David Thomas. World Atlas of Desertification. 2nd ed. London: Arnold, 1997.

Cita MLA (9a ed.)

Middleton, Nick, y David Thomas. World Atlas of Desertification. 2nd ed. Arnold, 1997.