Citazione APA

Allison, F. E. (1973). Soil organic matter and its role in crop production. Elsevier Publishing Company.

Stile di citazione Chicago

Allison, F E. Soil Organic Matter and Its Role in Crop Production. Amsterdam: Elsevier Publishing Company, 1973.

Citazione MLA

Allison, F E. Soil Organic Matter and Its Role in Crop Production. Elsevier Publishing Company, 1973.