Rand, Paul M., author
McGraw-Hill, 2013
Buku Teks
Markless, Sharon, author
Facet Publishing, 2006
Buku Teks
Katz, William A., 1924-, author
Holt, Rinehart and Winston, 1979
Buku Teks
Speinkel, Beryl W., author
Dow Jones-Irwin, 1977
Buku Teks
Curtin, Steve, author
[American Management Association, ], 2013
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