Ary Ginanjar Agustian
Arga, 2005
Buku Teks
Bernadeth Deminiz
Fakultas Psikologi Universitas Indonesia, 2019
UI - Skripsi (Membership)
Goleman, Daniel
Bantam Books, 1995
Buku Teks
edited by Lorraine Dacre-Pool, Pamela Qualter
Wiley, 2018
Buku Teks
McDermott, Lynda Caryl
American Society for Training and Development, 2008
eBooks