McNeill, Desmond
Croom Helm, 1981
Buku Teks SO
edited by Jagdish Bhagwati and Richard S. Eckaus
Penguin Books, 1970
Buku Teks
Wolf, Charles
Princeton University Press, 1960
Buku Teks SO
White, John
The Overseas Development Institute, 1967
Buku Teks
Mason, Edward S.
Published for the Council on Foreign Relations by Harper & Row, 1964
Buku Teks