Au, Sara, author
American Management Association;, 2008
eBooks
Morgan, Linda, author
Parent Map, 2010
Buku Teks
Kelly, Matthew
Ballantine Books, 2008
Buku Teks
Ryan Singgih Prabowo, author
2015
UI - Tesis (Membership)
Monica Christie, author
Fakultas Psikologi Universitas Indonesia, 2017
UI - Skripsi (Membership)