(2005). Soil organic matter. York, UK: The International Fertiliser Society.
シカゴスタイル引用形Soil Organic Matter. York, UK: The International Fertiliser Society, 2005.
MLA引用形式Soil Organic Matter. York, UK: The International Fertiliser Society, 2005.
警告: この引用は必ずしも正確ではありません.