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eBooks
Lawson, Karen
ASTD Press, 2008
Buku Teks
Burns, James McGregor, author
Harper and Row, 1978
Buku Teks
Mali Benyamin Mikhael, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2014
UI - Tesis (Membership)
Allen, Scott J., author
American Management Association, 2011
Buku Teks