edited by Gordon Greenwood and Norman Harper
F.W. Cheshire, 1957
Buku Teks
Cheshire, 1974
Buku Teks
edited by Gordon Greenwood and Norman Harper
F.W. Chesire, 1968
Buku Teks
Lenczowski, George
Cornell University Press, 1956
Buku Teks
Edited by Kajima Institute of International Peace.
Japan Times, 1971
Buku Referensi