Shaughnessy, John J., author
McGrawhill , 1994
Buku Teks
Elmes, David G, author
Thomson/Wadsworth, 2006
Buku Teks
Elmes, David G.
Brooks/Cole, 1999
Buku Teks
Goodwin, C. James, author
Wiley , 2010
Buku Teks
Goodwin, C. James, author
John Wiley & Sons, 2005
Buku Teks