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eBooks
Mochtar Kusumaatmadja
Alumni, 2002
Buku Teks
Nainggolan, Juleoria
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2009
UI - Tesis Open
editor, James P. Casey
John Wiley & Sons, 1980
Buku Teks
Pearce, David William, 1941-
Harvester Wheatsheaf, 1990
Buku Teks