Não informado. Year book of world affairs. London Institute of World Affairs.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Year Book of World Affairs. London: London Institute of World Affairs.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Year Book of World Affairs. London Institute of World Affairs.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.