Kusnandar
Fakultas Teknik Universitas Indonesia, 2009
UI - Skripsi (Open)
Ahmad Dahlan
Fakultas Teknik Universitas Indonesia, 2014
UI - Skripsi (Membership)
Aditya Meisar
Fakultas Teknik Universitas Indonesia, 2013
UI - Skripsi (Membership)
Haneberg, Lisa
American Society for Training & Development, 2010
eBooks
Buckley, Shawn
McGraw-Hill, 1979
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