Cita APA

Fred Magdoff, & Fred Magdoff; Harold van Es. (2000). Building soils for better crops. Beltsville, MD: Sustainable Agriculture Network.

Chicago Style Citation

Fred Magdoff, i Fred Magdoff; Harold van Es. Building Soils for Better Crops. Beltsville, MD: Sustainable Agriculture Network, 2000.

Cita MLA

Fred Magdoff, i Fred Magdoff; Harold van Es. Building Soils for Better Crops. Beltsville, MD: Sustainable Agriculture Network, 2000.