Style de citation APA (7e éd.)

Morgan, R. P. C. (1998). Soil erosion and conservation. (2nd ed.). Longman.

Style de citation Chicago (17e éd.)

Morgan, R.P.C(Royston Philip Charles). Soil Erosion and Conservation. 2nd ed. Essex: Longman, 1998.

Style de citation MLA (9e éd.)

Morgan, R.P.C(Royston Philip Charles). Soil Erosion and Conservation. 2nd ed. Longman, 1998.