Ashley, Nicholas, author
McGraw-Hill, 1995
Buku Teks
Wiley & Sons, 2008
eBooks
Joe Kevin Joviand, author
2015
UI - Makalah dan Kertas Kerja
Beirne, Mike, author
American Management Association, 2006
eBooks
Niah Maretno Sari, author
Fakultas Psikologi Universitas Indonesia, 2016
UI - Tesis (Membership)