ASTD Research Study
American Society for Training & Development, 2011
eBooks
Mahoney, Thomas A., author
Prentice-Hall, 1961
Buku Teks
Lutfiana Nisa Wiegati, author
Fakultas Psikologi Universitas Indonesia, 2013
UI - Skripsi (Membership)
Toto Suryo Efar, author
Fakultas Kedokteran Universitas Indonesia, 2019
UI - Tesis (Membership)
Monica Christie, author
Fakultas Psikologi Universitas Indonesia, 2017
UI - Skripsi (Membership)