Das, Bhagirath Lal
Third World Network, 1998
Buku Teks
O`Connor, D.J.
Ure Smith Press , 1991
Buku Teks
Christou, Richard, author
Sweet & Maxwell, 1998
Buku Teks
United Nations , 1987
Buku Teks
[publisher not identified], [date of publication not identified]
Buku Teks