Cangelosi, James S., author
ITB Press, 1995
Buku Teks
Gagne, Robert M.
Holt, Rinehart and Winston, 1970
Buku Teks
Biehler, Robert F.
Houghton Miffiln, [date of publication not identified]
Buku Teks
O`Donnell, Angela M., author
John Wiley & Sons, 2012
Buku Teks
Santrock, John W., author
McGraw-Hill, 2008
Buku Teks