Gaya APA

David, C, C., Hendrik, D, C, F. (2004). Fundamentals of soil ecology (ed. 2). New York: Academi Press.

Gaya MLA

David, Coleman, C.., Hendrik, D.A., CrossleyPaul, F.. "Fundamentals of soil ecology". ed. 2 New York: Academi Press, 2004. Text.