Hatfield, J. (1994). Soil biology: Effects on soil quality. Lewis Publishers.
Citazione stile Chigago Style (17a edizione)Hatfield, J.L. Soil Biology: Effects on Soil Quality. Boca Raton: Lewis Publishers, 1994.
Citatione MLA (9a ed.)Hatfield, J.L. Soil Biology: Effects on Soil Quality. Lewis Publishers, 1994.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.