Jeffers, O. (2014). Once upon an alphabet (First American edition.). Philomel Books, an imprint of Penguin Group (USA).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJeffers, Oliver. Once upon an Alphabet. First American edition. New York, NY: Philomel Books, an imprint of Penguin Group (USA), 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रJeffers, Oliver. Once upon an Alphabet. First American edition. Philomel Books, an imprint of Penguin Group (USA), 2014.
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