Não informado. (1959). Monthly Statistics of Foreign Trade. Organization for Economic Co-Operation and Development, Department of Economic and Statistics.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Monthly Statistics of Foreign Trade. Paris: Organization for Economic Co-Operation and Development, Department of Economic and Statistics, 1959.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Monthly Statistics of Foreign Trade. Organization for Economic Co-Operation and Development, Department of Economic and Statistics, 1959.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.