Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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