Devine, Tom, author
Berrett-Koehler, 2011
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Artikel Jurnal
Reni Fazila, author
Fakultas Hukum Universitas Indonesia, 2016
UI - Skripsi (Membership)
Davidson, Kenneth M.
West Publishing Company, 1974
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Bracy, Warren D.
The Bobbs-Merrill Company, Inc., 1978
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