Cita APA

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

Chicago Edition Citation

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

Cita MLA

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