Rezky Utari, author
2015
UI - Skripsi (Membership)
Etna Maria, author
Fakultas Psikologi Universitas Indonesia, 1990
UI - Skripsi (Membership)
Fairuz Rista Ismah, author
2014
UI - Skripsi (Membership)
Raymond, author
Universitas Indonesia, 2014
UI - Skripsi (Membership)
oleh Dadang Hawari [and others]
Pustaka Antara, 1996
Buku Teks