(2011). Flash Eurobarometer. Off. for Official Publ. of the Europ. Communities.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFlash Eurobarometer. Luxembourg: Off. for Official Publ. of the Europ. Communities, 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFlash Eurobarometer. Off. for Official Publ. of the Europ. Communities, 2011.
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