Carr, S. J. (1989). Technology for small scale farmers in Sub-Saharan Africa: Experience with food crop production in five major ecological zones (1. printing.). World Bank.
Chicago-Zitierstil (17. Ausg.)Carr, Stephen J. Technology for Small Scale Farmers in Sub-Saharan Africa: Experience with Food Crop Production in Five Major Ecological Zones. 1. printing. Washington, D.C: World Bank, 1989.
MLA-Zitierstil (9. Ausg.)Carr, Stephen J. Technology for Small Scale Farmers in Sub-Saharan Africa: Experience with Food Crop Production in Five Major Ecological Zones. 1. printing. World Bank, 1989.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.