Malinda Arianne
Fakultas Psikologi Universitas Indonesia, 2018
UI - Skripsi Membership
Agnes Dwi Retno Kumorosari
2017
UI - Skripsi Membership
Azman Ismail
Universiti Kebangsaan Malaysia. Faculty of Economics & Management ; International Islamic University Malaysia. Kulliyah of Economics and Management Science, 2013
Artikel Jurnal
Garton, Jeffrey
ASTD Press, 2008
eBooks
Arvin Gumilang
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2005
UI - Tesis Membership