Johnson, H. G. (1971). Trade strategy for rich and poor nations. George Allen and Unwin.
Dyfyniad Arddull ChicagoJohnson, Harry G. Trade Strategy for Rich and Poor Nations. London: George Allen and Unwin, 1971.
Dyfyniad MLAJohnson, Harry G. Trade Strategy for Rich and Poor Nations. George Allen and Unwin, 1971.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.