Purba, Debora Eflina, author
Fakultas Psikologi Universitas Indonesia, 2003
UI - Tesis (Membership)
Anindita Sandrina Tamzil, author
Fakultas Psikologi Universitas Indonesia, 2013
UI - Skripsi (Membership)
Sumadi Suryabrata, author
Rajawali, 2011
Buku Teks
Alwisol, author
Universitas Muhammadiyah Malang, 2016
Buku Teks
Sumadi Suryabrata, author
RajaGrafindo Persada, 1998
Buku Teks