edited by Susan Hart
Routledge , 1996
Buku Teks
Morgenthau, Hans J., author
The University of Chicago Press, 1962
Buku Teks
Bolton, W. (William), 1933-, author
Longman Sciantific & Technical, 1995
Buku Teks
Whittaker, J. Richard, author
Dickenson, 1968
Buku Teks
editor, Spyros Doxiadis ; editorial committee, Roger Blaney [and others]
John Wiley & Sons, 1987
Buku Teks