Matheson, C. (2019). Bird watch (First edition.). Greenwillow Books, an imprint of HarperCollinsPublishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMatheson, Christie. Bird Watch. First edition. New York, NY: Greenwillow Books, an imprint of HarperCollinsPublishers, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMatheson, Christie. Bird Watch. First edition. Greenwillow Books, an imprint of HarperCollinsPublishers, 2019.
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