Não informado. (1990). Cambridge Review of International Affairs. Centre of International Studies.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Cambridge Review of International Affairs. Cambridge, Inglaterra: Centre of International Studies, 1990.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Cambridge Review of International Affairs. Centre of International Studies, 1990.
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