Economic development and planning: essays in honour of Jan Tinbergen
edited by Willy Sellekaerts
Macmillan, 1974
Buku Teks
Gipson, Carolyn R.
The McGraw-Hill dictionary of international trade and finance
McGraw-Hill, 1994
Buku Referensi
King, Philip
International economics and international economic policy: a reader
McGraw-Hill , 1995
Buku Teks
King, Philip
International economics and international economic policy: a reader
McGraww-Hill, 1990
Buku Teks
Root, Franklin R.
International trade and investment
South-Western Publishing, 1978
Buku Teks