McGilvery, Robert W.
Airlangga University Press , 1996
Buku Teks
Montgomery, Rex
Mosby, 1990
Buku Teks
Lieberman, Michael
Wolters Kluwer, 2009
Buku Teks
edited by Robert L. Burnap and Willem F.J. Vermaas
Springer, 2012
eBooks
Armstrong, James W.
Brooks/Cole Cengage Learning, 2012
Buku Teks