Boulding, Kenneth E. (Kenneth Ewart), 1910-1993, author
Harper, 1963
Buku Teks
Moscovici, Serge
London, 1994
Buku Teks
Hutchinson, John, author
Sage Publications, 2005
Buku Teks
Bettina E. Schmidt, Ingo W. Schroder, editor
Routlegde , 2001
Buku Teks
edited by Richard Burchill, Nigel D. White and Justin Morris
Cambridge University Press, 2005
Buku Teks