Johnson, H. G. (1971). Trade strategy for rich and poor nations. George Allen and Unwin.
Chicago Style aipamenaJohnson, Harry G. Trade Strategy for Rich and Poor Nations. London: George Allen and Unwin, 1971.
MLA aipamenaJohnson, Harry G. Trade Strategy for Rich and Poor Nations. George Allen and Unwin, 1971.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.