Mohammed Bedjaoui, general editor
Unesco, 1991
Buku Referensi
Cambridge University Press , 2012
Buku Teks
edited by Beth A. Simmons and Richard H. Steinberg
Cambridge University Press, 2006
Buku Teks
by Maxwell Watson [and others]
International Monetary Fund, 1986
Buku Teks
Fenwick, Charles G., author
Appleton-Century-Crofts, 1948
Buku Teks