Judd, Charles M., author
Methuen, 1991
Buku Teks
Lee, Raymond M., author
Open University Press, 2000
Buku Teks
Bank, Marcus, author
Sage Publications, 2001
Buku Teks
Elliot Aronson...[et al.]
McGraw-Hill , 1990
Buku Teks
Goode, William J., author
McGraw-Hill, 1952
Buku Teks