Singer, Jerome L., author
American Psychological Association, 2006
Buku Teks
Jane Luvena Pietra, author
Fakultas Psikologi Universitas Indonesia, 2013
UI - Tesis (Membership)
Sieh, Kerry
W.H. Freeman and Company , 1999
Buku Teks
Lidya Ambarsari, author
2019
UI - Tugas Akhir
Dian Asri Dwi Nugrahani, author
Fakultas Ilmu Keperawatan Universitas Indonesia, 2020
UI - Tugas Akhir