Dierolf, T. (2001). Soil Fertility Kit: A toolkit for acid, Upland soil fertility management in Southeast Asia. Indonesia: Agency for Agricultural Human resources development.
シカゴスタイル引用形Dierolf, Thomas. Soil Fertility Kit: A Toolkit for Acid, Upland Soil Fertility Management in Southeast Asia. Indonesia: Agency for Agricultural Human resources development, 2001.
MLA引用形式Dierolf, Thomas. Soil Fertility Kit: A Toolkit for Acid, Upland Soil Fertility Management in Southeast Asia. Indonesia: Agency for Agricultural Human resources development, 2001.
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