Mutel. A Watershed Year. University of Iowa Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMutel. A Watershed Year. University of Iowa Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMutel. A Watershed Year. University of Iowa Press.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.