Gaya APA

Stevenson, F., Cole, M. (1999). Cycles of soils : carbon, nitrogen, phosphorus, sulfur, micronutrients / F.J. Stevenson, M.A. Cole (Ed.ke-2, Cet.10). New York: John Wiley n Sons.

Gaya MLA

Stevenson, F.J.., Cole, M.A.. "Cycles of soils : carbon, nitrogen, phosphorus, sulfur, micronutrients / F.J. Stevenson, M.A. Cole". Ed.ke-2, Cet.10 New York: John Wiley n Sons, 1999. Textbook.