Andrian Nirmansyah, author
2012
UI - Skripsi (Open)
Fakultas Psikologi Universitas Indonesia, 2004
UI - Tesis (Membership)
Nita Safitri, author
2014
UI - Skripsi (Membership)
Neff, Rose Ann
Wisconsin Magna Publications , 1989
Buku Teks
Evertson, Carolyn M., author
Kencana Prenada Media Group, 2011
Buku Teks