Lambert, Brian W.
American Society for Training & Development, 2009
eBooks
Hogan, Kevin
Mumbai: Magna Publishing, 2003,
Buku Teks
Myerson, Jeremy
Laurence King, 2006
Buku Referensi
Rossa Rahmawati
Fakultas Ilmu Administrasi Universitas Indonesia, 2022
UI - Skripsi (Membership)
Jobber, David
Prentice-Hall, 2000
Buku Teks