Wexley, Kenneth N., author
Irwin, 1984
Buku Referensi
Santrock, John W., author
W.C. Brown Publisher, 1991
Buku Referensi
Passer, Michael W
McGraw-Hill, 2007
Multimedia
Passer, Michael W.
McGraw-Hill, 2007
Multimedia
Johnson, Ronald C. (Ronald Charles), author
John Wiley & Sons, 1969
Buku Teks