Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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