Dorfman, Mark S.
Prentice-Hall, 1998
Buku Teks
Willett, Allan H., author
University of Pennsylvania Press, 1951
Buku Teks
Vaughan, Emmett J., author
John Wiley & Sons, 2001
Buku Teks
Williams, C. Arthur, author
McGraw-Hill, 1998
Buku Teks
Rejda, George E., author
Pearson Addison Wesley , 2001
Buku Teks