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penyunting, Pariata Westra, Sutarto, Ibnu Syamsi
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Lumbantoruan, Magdalena, compiler
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Cipta Adi Pustaka, 1992
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Lumbantoruan, Magdalena, compiler
Ensiklopedi ekonomi, bisnis, & manajemen; Jilid 1
Cipta Adi Pustaka, 1992
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Singh, U.K.
International encyclopedia of professional management : vol. 3, Strategic management
Anmol Publications, 1998
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Singh, U.K.
International encyclopedia of professional management Vol. 4, Project management
New Delhi : Anmol Publications, 1998,
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