APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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

Let op: Deze citaties zijn niet altijd 100% accuraat.