Gaya APA

McCracken, S, B, F, H, R. (1989). Soil Genesis and Classification (Edisi ke-2). Madison, Wisconsin, AS: The Iowa State University Press.

Gaya MLA

McCracken, S.W., Buol,, F.D., Hole,, R.J.. "Soil Genesis and Classification". Edisi ke-2 Madison, Wisconsin, AS: The Iowa State University Press, 1989. Text.