Royal Institute of International Affairs, 1954
Buku Teks SO
edited by Peter Mansfield
Oxford University Press, 1973]
Buku Teks SO
Stocking, George W.
Vanderbilt University Press, 1970
Buku Teks
Bullard, Reader
Oxford university Press, 1958
Buku Teks SO
Higgins, Benjamin
Richard D. Irwin, 1962
Buku Teks