Praya Arie Indrayana, author
Universitas Indonesia, 2018
UI - Tesis (Membership)
Siswanto, author
Andi, 1985
Buku Teks
Avriel, Mordecai
Prentice-Hall, 1976
Buku Teks
Ignizio, James P., author
Sage, 1985
Buku Teks
Imantya Putri, author
Fakultas Psikologi Universitas Indonesia, 2016
UI - Skripsi (Membership)