Beets, W. C. (1990). Raising and sustaining productivity of smallholder farming systems in the tropics: A handbook of sustainable agricultural development (1. publ.). AgBé Publ.
Chicago-Zitierstil (17. Ausg.)Beets, Willem C. Raising and Sustaining Productivity of Smallholder Farming Systems in the Tropics: A Handbook of Sustainable Agricultural Development. 1. publ. Alkmaar: AgBé Publ, 1990.
MLA-Zitierstil (9. Ausg.)Beets, Willem C. Raising and Sustaining Productivity of Smallholder Farming Systems in the Tropics: A Handbook of Sustainable Agricultural Development. 1. publ. AgBé Publ, 1990.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.