Mackenizie, John
Illinois: Dow Jones-Irwin, 1989
Buku Teks
Tobin, Daniel R., 1946-, author
McGraw-Hill, 2012
Buku Teks
Rosenberg, Helena Hacker
Harper Collins , 1998
Buku Teks
Wallace Stettinius
Media Global Edukasi, 2005
Buku Teks
Segil, Larraine, author
[American Management Association, ], 2004
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