Prager, Jonas
Harper & Row, 1982
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Linda Wimelda
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2015
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Kumar, Rajesh
Academic Press, 2014
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Elvia Sumayastra
Fakultas Eknonomi dan Bisnis Universitas Indonesia, 2015
UI - Skripsi (Membership)
Mishkin, Frederick S.
Harper-Collins, 1995
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