Heinerman, John
Prentice Hall, Paramus, N.J., 1998
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P. McDonald ... [et al.]
Longman, 1995
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Sancaya Naresvari Wijaya
Fakultas Ilmu Administrasi Universitas Indonesia, 2014
UI - Skripsi Membership
Gropper, Sareen S.
Cengage Learning, 2018
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Gropper, Sareen Annora Stepnick
Wadsworth and Cengage Learning, 2013
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