Paramita Noor Yanti, author
Fakultas Psikologi Universitas Indonesia, 2014
UI - Skripsi (Membership)
Riggio, Ronald E., author
Pearson, 2009
Buku Teks
The British Psychological Society, 2018
Majalah, Jurnal, Buletin
Sintya Puspitarini, author
Universitas Indonesia, 2015
UI - Skripsi (Membership)
George Allen and Unwin, 1956
Buku Teks