Cita APA (7a ed.)

Duddin, M., & Hendrie, A. (1988). World land and water resources (1. publ.). Arnold.

Cita Chicago Style (17a ed.)

Duddin, Martin, y Alister Hendrie. World Land and Water Resources. 1. publ. London [u.a.]: Arnold, 1988.

Cita MLA (9a ed.)

Duddin, Martin, y Alister Hendrie. World Land and Water Resources. 1. publ. Arnold, 1988.