Krasner, David, 1952-, author
Wiley Balckwell, 2016
Buku Teks
edited by Brian Docherty
Macmillan, 1994
Buku Teks
Berkowitz, Gerald M., author
Longman, 1994
Buku Teks
Downer, Alan, author
University of Minnesota Press, 1961
Buku Teks
Wandor, Michelene
Longman, 1993
Buku Teks