APA استشهاد

Johnson, H. G. (1971). Trade strategy for rich and poor nations. George Allen and Unwin.

استشهاد بنمط شيكاغو

Johnson, Harry G. Trade Strategy for Rich and Poor Nations. London: George Allen and Unwin, 1971.

MLA استشهاد

Johnson, Harry G. Trade Strategy for Rich and Poor Nations. George Allen and Unwin, 1971.