Troeh, F. R. (2005). Soils and soil fertility. Oxford: Blackwell.
シカゴスタイル引用形Troeh, Frederick R. Soils and Soil Fertility. Oxford: Blackwell, 2005.
MLA引用形式Troeh, Frederick R. Soils and Soil Fertility. Oxford: Blackwell, 2005.
警告: この引用は必ずしも正確ではありません.