Radford, K.J., author
Phoenix Press, 1981
Buku Teks
Widyatmiko Adhi Pradhana, author
Fakultas Psikologi Universitas Indonesia, 2014
UI - Tesis (Membership)
Melman, Seymour, author
Oxford, Basil Blacwell & Mott
Buku Teks
Masys, Anthony, editor
Springer, 2016
Buku Teks
Fox, William M
Jossey Bass, 1987
Buku Teks