Dyfyniad APA

Schroth, G., & Sinclair, F. L. (2003). Trees, crops and soil fertility: Concepts and research methods. CAB International.

Dyfyniad Arddull Chicago

Schroth, G., and Fergus L. Sinclair. Trees, Crops and Soil Fertility: Concepts and Research Methods. UK: CAB International, 2003.

Dyfyniad MLA

Schroth, G., and Fergus L. Sinclair. Trees, Crops and Soil Fertility: Concepts and Research Methods. CAB International, 2003.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.