Kelly, E. E. (2017). Hello, universe (First edition.). Greenwillow Books, an imprint of HarperCollinsPublishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKelly, Erin Entrada. Hello, Universe. First edition. New York, NY: Greenwillow Books, an imprint of HarperCollinsPublishers, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKelly, Erin Entrada. Hello, Universe. First edition. Greenwillow Books, an imprint of HarperCollinsPublishers, 2017.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.