Kemp, M. C. (1964). Pure theory of international trade. Prentice- Hall of India Pvt Ltd.
Dyfyniad Arddull ChicagoKemp, Murray C. Pure Theory of International Trade. Newdelhi: Prentice- Hall of India Pvt Ltd, 1964.
Dyfyniad MLAKemp, Murray C. Pure Theory of International Trade. Prentice- Hall of India Pvt Ltd, 1964.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.