Erskine, K. (2021). Lily's promise (First edition.). Quill Tree Books, an imprint of HarperCollinsPublishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रErskine, Kathryn. Lily's Promise. First edition. New York, NY: Quill Tree Books, an imprint of HarperCollinsPublishers, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रErskine, Kathryn. Lily's Promise. First edition. Quill Tree Books, an imprint of HarperCollinsPublishers, 2021.
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