Citazione Stile APA (7a Edizione)

Murphy, J. (1991). Farmers' estimations as a source of production data: Methodological guidelines for cereals in Africa. World Bank.

Citazione stile Chigago Style (17a edizione)

Murphy, Josette. Farmers' Estimations as a Source of Production Data: Methodological Guidelines for Cereals in Africa. Washington: World Bank, 1991.

Citatione MLA (9a ed.)

Murphy, Josette. Farmers' Estimations as a Source of Production Data: Methodological Guidelines for Cereals in Africa. World Bank, 1991.