Citazione Stile APA (7a Edizione)

MORGAN, R. (1981). Soil conservation: Problems and prospects. Wiley.

Citazione stile Chigago Style (17a edizione)

MORGAN, R.P.C. Soil Conservation: Problems and Prospects. New York: Wiley, 1981.

Citatione MLA (9a ed.)

MORGAN, R.P.C. Soil Conservation: Problems and Prospects. Wiley, 1981.