Santrock, John W.
McGraw-Hill, 2004
Buku Teks SO
Day, Paul W
Twayne Publishers , 1968
Buku Teks SO
Kendrick, John W.
American Enterprise Institute , 1982
Buku Teks
Woll, John W.
Harcourt, Brace & World, 1966
Buku Teks SO
Spanier, John W.
Praeger , 1967
Buku Teks SO