Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1992
UI - Skripsi (Membership)
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Allyn and Bacon, Inc., 1972
Buku Teks
Appleyard, Dennis R., author
McGraw-Hill, 2014
Buku Teks
by George Zis ... [et al.]
Longman, 1988
Buku Teks
Pavel, Lacra, author
[Springer, ], 2012
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