Rasch, Dieter, author
John Wiley & Sons, 2011
Buku Teks
Novick, Melvin R.
McGraw-Hill, 1974
Buku Teks
Deese, James, author
McGraw-Hill, 1967
Buku Teks
Edwards, Allen L., author
Rinehart and Winston , 1958
Buku Teks
Santrock, John W., author
McGraw-Hill, 2008
Buku Teks