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Fakultas Ilmu Administrasi Universitas Indonesia, 2021
UI - Skripsi (Membership)
Steven S. Coughlin, Selina A. Smith, and Maria E. Fernandez, editors
Oxford University Press, 2017
eBooks
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McGraw-Hill, 2013
Buku Teks
Singer-Dekker, H.
Gouda Quint, 1984
Buku Teks
Brownlee, Ian, author
Longman, 1998
Buku Teks