United Nations, 1971
Buku Teks
United Nations Publications, 1975
Buku Teks
Schwebel, Stephen M.
Harvard University Press, 1952
Buku Teks
Wright, Quincy, author
Asia Publishing House, 1960
Buku Teks
Coyle, David Cushman, 1887-1969, author
Columbia University Press, 1963
Buku Teks