Goldmann, Kjell, author
Routledge, 1996
Buku Teks
Deutsch, Karl W
Prentice-Hall, 1978
Buku Teks
Spero, Joan Edelman, author
Routledge, 1994
Buku Teks
Halliday, Fred, author
Cambridge University Press, 2005
Buku Teks
Gilpin, Robert, author
Princeton University Press, 1987
Buku Teks