Artikel Jurnal
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UI - Skripsi (Membership)
Nasution, Khairunnisa, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2016
UI - Tesis (Membership)
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1994
UI - Skripsi (Membership)
Burnard, Philip, author
Chapman&Hall,, 1995
Buku Referensi