Zentner, J. (2017). Goodbye days: A novel (First edition.). Crown Books for Young Readers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रZentner, Jeff. Goodbye Days: A Novel. First edition. New York: Crown Books for Young Readers, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रZentner, Jeff. Goodbye Days: A Novel. First edition. Crown Books for Young Readers, 2017.
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