Highet, Gilbert, author
Columbia University Press, 1954
Buku Teks
Cope, Oliver M.D.
Lippincott Comp., 1968
Buku Teks
Santrock, John W., author
W.C. Brown Publisher, 1991
Buku Referensi
Passer, Michael W
McGraw-Hill, 2007
Multimedia
Fakultas Psikologi Universitas Pancasila, 2017
Majalah, Jurnal, Buletin