Gaya APA

GARDINER, D, T., MILLER, R, W. (2004). Soils in our environment (10th ed.). New Jersey: Pearson Prentice Hall.

Gaya MLA

GARDINER, Duane, T.., MILLER, Raymond, W.. "Soils in our environment". 10th ed. New Jersey: Pearson Prentice Hall, 2004. Buku.