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Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1992
UI - Skripsi Membership
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Prenadamedia Group, 2015
Buku Teks
Lacy, Stephen
Lawrence Erlbanan Associates, 1993
Buku Teks
Astari Ratna Wardani, author
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UI - Makalah dan Kertas Kerja
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McGraw-Hill, 1989
Buku Teks