Noripah Kamso
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Farid Ghazi Suharjo
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2012
UI - Tesis Open
Gunardi Endro
Universitas Indonesia, 1999
UI - Tesis Membership
Harvard Business School Press, 2003
Buku Teks SO
edited by Peter W.F. Davies
Routledge, 1997
Buku Teks SO