Sullivan, Thomas J., 1944-, author
John Wiley & Sons, 1984
Buku Teks
edited by James F. Short
Sage, 1986
Buku Teks
Abrahamson, Mark, author
Prentice-Hall, 1981
Buku Teks
Henslin, James M., author
Erlangga, 2007
Buku Teks
Kendall, Diana, author
Thomson/Wadsworth, 2008
Buku Teks