Markle, S. (2019). The great rhino rescue: Saving the southern white rhinos. Millbrook Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMarkle, Sandra. The Great Rhino Rescue: Saving the Southern White Rhinos. Minneapolis: Millbrook Press, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMarkle, Sandra. The Great Rhino Rescue: Saving the Southern White Rhinos. Millbrook Press, 2019.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.