Piters, B. d. S. (1995). Diversity of fields and farmers: Explaining yield variations in northern cameroon. Landbouw University.
シカゴスタイル引用形Piters, Bart de Steenhuijsen. Diversity of Fields and Farmers: Explaining Yield Variations in Northern Cameroon. Wageningen: Landbouw University, 1995.
MLA引用形式Piters, Bart de Steenhuijsen. Diversity of Fields and Farmers: Explaining Yield Variations in Northern Cameroon. Landbouw University, 1995.
警告: この引用は必ずしも正確ではありません.