Moore, Kenneth D
McGraw--Hill, 2007
Buku Teks
edited by Sandy Schuck, Peter Aubusson, John Buchanan and Tom Russell
Springer, 2012
eBooks
Biehler, Robert F.
Houghton Miffiln, [Date of publication not identified]
Buku Teks SO
Snowman, Jack
Wadsworth and Cengage Learning, 2012
Buku Teks
Moore, Kenneth D.
Random House , 1989
Buku Teks