Doerr, A. (2007). Four seasons in Rome: On twins, insomnia, and the biggest funeral in the history of the world. Scribner.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDoerr, Anthony. Four Seasons in Rome: On Twins, Insomnia, and the Biggest Funeral in the History of the World. New York: Scribner, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDoerr, Anthony. Four Seasons in Rome: On Twins, Insomnia, and the Biggest Funeral in the History of the World. Scribner, 2007.
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