Kim, Samuel S., 1935-, author
Westview Press, 1984
Buku Teks
edited by Saul H. Mendlovitz
Free Press, 1975
Buku Teks
Levi, Werner
The University of Minnesota Press, 1953
Buku Teks
Bull, Hedley, author
Macmillan, 1995
Buku Teks
Luard, Evan, selector
Oxford University Press , 1964
Buku Teks