Vivian, John, author
Pearson and AB, 2007
Buku Teks
Dominick, Joseph R., author
McGraw-Hill, 1993
Buku Teks
Dominick, Joseph R., author
Random House, 1983
Buku Teks
edited by Warren K. Agee, Phillip H. Ault, Edwin Emery
Harper and Row, 1982
Buku Teks
Dominick, Joseph R.
2005
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