Parsegian, V. Lawrence
Addison-Wesley Pub. Co., 1965
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Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2010
UI - Tesis (Open)
LeBoeuf, Michael, author
McGraw-Hill, 1982
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Harvard Business School Press, 1997
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Salmariza Sy, author
[Publisher not identified], 2011
Artikel Jurnal