Hatfield, J. (1994). Soil biology: Effects on soil quality. Lewis Publishers.
Chicago-čujuhus (17. p.)Hatfield, J.L. Soil Biology: Effects on Soil Quality. Boca Raton: Lewis Publishers, 1994.
MLA-čujuhus (9. p.)Hatfield, J.L. Soil Biology: Effects on Soil Quality. Lewis Publishers, 1994.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.