Albert Howard. (2004). The Waste Products Of Agriculture: Their Utilization As Humus. Agrobios.
シカゴスタイル引用形Albert Howard. The Waste Products Of Agriculture: Their Utilization As Humus. Jodhpur: Agrobios, 2004.
MLA引用形式Albert Howard. The Waste Products Of Agriculture: Their Utilization As Humus. Agrobios, 2004.
警告: この引用は必ずしも正確ではありません.