Moore, Kenneth D
McGraw--Hill, 2007
Buku Teks
Sandy Schuck, Peter Aubusson, John Buchanan, Tom Russell, editors
[Springer, Springer], 2012
eBooks
Snowman, Jack
Wadsworth and Cengage Learning, 2012
Buku Teks
Moore, Kenneth D.
Random House , 1989
Buku Teks
Plack, Margaret M.
Slack Incorporated, 2011
Buku Teks