Keith, Lyman A.
Study guide to accompany : introduction to business enterprise
McGraw-Hill, 1975
 Buku Teks SO
Paulson, Edward
The complete ideal's guide starting your own business
Prenada Media, 2003
 Buku Teks SO
Griffin, Ricky W.
Business
Prentice-Hall, 1999
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Griffin, Ricky W.
Business
Prentice-Hall, 2002
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Wheeler, Bayard O.
Business
Harper & Row. Publisher, 1968
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