Fallik, Fred
The Dorsey Press, 1983
Buku Teks
Titin Juhartini, author
Fakultas Psikologi Universitas Indonesia, 2006
UI - Tesis (Membership)
Rena Latifa, author
Fakultas Psikologi Universitas Indonesia, 2006
UI - Tesis (Membership)
Zechmeister, Eugene B., author
Thomson/Wadsworth, 2003
Buku Teks
Nunnally, Jum C., author
McGraw-Hill, 1994
Buku Teks