APA

B.C.Ball R., Campbell C. & Watson A. (2001). Sustainable Management of Soil Organic Matter. New York: CABLژPublishing.

Chicago

B.C.Ball R.M.Reess, Campbell C.D and Watson A.C. 2001. Sustainable Management of Soil Organic Matter. New York: CABLژPublishing.

Harvard

B.C.Ball R., Campbell C. and Watson A. (2001). Sustainable Management of Soil Organic Matter. New York: CABLژPublishing.

MLA

B.C.Ball R.M.Reess, Campbell C.D and Watson A.C. Sustainable Management of Soil Organic Matter. New York: CABLژPublishing. 2001.