(1966). International trade and development, theory and policy. Warszawa: PWN-Polish Scientific Publishers.
Dyfyniad Arddull ChicagoInternational Trade and Development, Theory and Policy. Warszawa: PWN-Polish Scientific Publishers, 1966.
Dyfyniad MLAInternational Trade and Development, Theory and Policy. Warszawa: PWN-Polish Scientific Publishers, 1966.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.