Cambridge University Press, 2009
eBooks
Fiske, John, author
Routledge 1990, 1990
Buku Teks
Lyons, John, author
New York Cambridge University Press 1992,
Buku Teks
Oakland, John, author
London; New York Routledge 1992,
Buku Teks
Chua, Leon O.,
Prentice-Hall, [1975]
Buku Teks