Lambert, Brian W., author
American Society for Training & Development, 2009
eBooks
Hogan, Kevin, author
Mumbai: Magna Publishing, 2003,
Buku Teks
Ahmad Hargi Septiawan, author
Universitas Indonesia, 2013
UI - Skripsi (Membership)
Sarah Nabilla Yasmin Riza, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2018
UI - Makalah dan Kertas Kerja
Bly, Robert W., author
American Management Association, 2006
eBooks