Cita APA (7a ed.)

Magdoff, F., & Weil, R. R. (2004). Soil organic matter in sustainable agriculture. CRC Press.

Cita Chicago Style (17a ed.)

Magdoff, Fred, y Ray R. Weil. Soil Organic Matter in Sustainable Agriculture. Boca Raton: CRC Press, 2004.

Cita MLA (8a ed.)

Magdoff, Fred, y Ray R. Weil. Soil Organic Matter in Sustainable Agriculture. CRC Press, 2004.