Novak, Mark, author
Pearson, 2014
Buku Teks
Tri Budi Wahyuni Rahardjo, editor
UI-Press, 2001
UI - Pidato
Mickey, Stanley, author
Davis, 1999
Buku Teks
Chusnul Chotimah, author
Fakultas Psikologi Universitas Indonesia, 2000
UI - Skripsi Membership
Cox, Harold, author
Prentice-Hall, 1984
Buku Teks