Coven, W., & Burris, P. (2017). Heidi Heckelbeck and the never-ending day (First Little Simon paperback edition.). Little Simon.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCoven, Wanda, और Priscilla Burris. Heidi Heckelbeck and the Never-ending Day. First Little Simon paperback edition. New York: Little Simon, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCoven, Wanda, और Priscilla Burris. Heidi Heckelbeck and the Never-ending Day. First Little Simon paperback edition. Little Simon, 2017.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.