(2001). Crop production in tropical Africa. Brussels: Directorate General for International Co-operation.
シカゴスタイル引用形Crop Production in Tropical Africa. Brussels: Directorate General for International Co-operation, 2001.
MLA引用形式Crop Production in Tropical Africa. Brussels: Directorate General for International Co-operation, 2001.
警告: この引用は必ずしも正確ではありません.