Sage Publications, 2001
Buku Teks
Argyle, Michael.
Allen Lane, 1972
Buku Teks
John Wiley & Sons , 2009
Buku Teks
Furnham, Adrian, author
Psychology Press, 2002
Buku Teks
Gilmer, B. von Haller (Beverly von Haller), 1909-1994, author
McGraw-Hill, 1967
Buku Teks