Grippando, J. (2021). Twenty (First edition.). Harper, an imprint of HarperCollinsPublishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGrippando, James. Twenty. First edition. New York, NY: Harper, an imprint of HarperCollinsPublishers, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGrippando, James. Twenty. First edition. Harper, an imprint of HarperCollinsPublishers, 2021.
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