Westerman. Follow the Blackbirds. Michigan State University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWesterman. Follow the Blackbirds. Michigan State University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWesterman. Follow the Blackbirds. Michigan State University Press.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.