Worchel, Stephen
Prentice-Hall, 1995
Buku Teks
edited by Gordon H. Bower
Random House, 1987
Buku Teks
Baldwin, John D., 1941-, author
Prentice-Hall, 1986
Buku Teks
Ryan, Thomas Arthur
The Ronald Company , 1954
Buku Teks
Staats, Arthur W.
Holt, Rinehart and Winston, 1964
Buku Teks