Murphy, J. (1991). Farmers' estimations as a source of production data: Methodological guidelines for cereals in Africa. World Bank.
Chicago-Zitierstil (17. Ausg.)Murphy, Josette. Farmers' Estimations as a Source of Production Data: Methodological Guidelines for Cereals in Africa. Washington: World Bank, 1991.
MLA-Zitierstil (9. Ausg.)Murphy, Josette. Farmers' Estimations as a Source of Production Data: Methodological Guidelines for Cereals in Africa. World Bank, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.