Forward, N. (1971). The field of nations: An account of some new approaches to international relations. Macmillan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रForward, Nigel. The Field of Nations: An Account of Some New Approaches to International Relations. Macmillan, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रForward, Nigel. The Field of Nations: An Account of Some New Approaches to International Relations. Macmillan, 1971.
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