Stevenson, Deborah, author
Open University Press, 2003
Buku Teks
Rozman, Gilbert, author
Princeton University Press, 1973
Buku Teks
Ewen, Shane, author
MA Polity Press, 2016
Buku Teks
Gist, Noel P., author
Harper & Row , 1974
Buku Teks
edited by Ricky Burdett and Deyan Sudjic
Phaidon Press Ltd., 2011
Buku Referensi