Collins. Turtles in Your Pocket. University of Iowa Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCollins. Turtles in Your Pocket. University of Iowa Press.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCollins. Turtles in Your Pocket. University of Iowa Press.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.