Greene, Thomas H., author
Prentice-Hall, 1984
Buku Teks
edited by Brian Head
Oxford University Press, 1988
Buku Teks
Taft, Philip, author
Rinehart, 1950
Buku Teks
Suehirom, Kikuo
Productivity Press, 1992
Buku Teks
Tugba Basaran, Didier Bigo, Emmanuel-Pierre Guittet and R.B.J Walker.
Routledge, 2017
Buku Teks