Russell, H. (2015). The year of living danishly: Uncovering the secrets of the world's happiest country.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRussell, Helen. The Year of Living Danishly: Uncovering the Secrets of the World's Happiest Country. 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRussell, Helen. The Year of Living Danishly: Uncovering the Secrets of the World's Happiest Country. 2015.
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