Cooper, Donald R.
Business research methods
McGraw-Hil, 2003
Multimedia
Saunders, Mark
Research methods for business students
Prentice-Hall, 2003
Buku Teks
Cooper, Donald R.
Business research methods
Irwin/McGraw-Hill, 1998
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Cooper, Donald R.
Business research methods
McGraw-Hill, 2001
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Zikmund, William G.
Business research methods
The Dryden Press , 1991
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