Burger, Jerry M., author
Wadsworth and Cengage Learning, 2011
Buku Teks
Sapir, Edward
University of California Press, 1949
Buku Teks
Pervin, Lawrence A., author
New York, 1997
Buku Teks
Pervin, Lawrence A., author
John Wiley & Sons, 2005
Buku Teks
Burger, Jerry M., author
Wadsworth, 1986
Buku Teks