Ball, D. (2017). Backwards and forwards: A technical manual for reading plays. Southern Illinois University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBall, David. Backwards and Forwards: A Technical Manual for Reading Plays. Carbondale: Southern Illinois University Press, 2017.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBall, David. Backwards and Forwards: A Technical Manual for Reading Plays. Southern Illinois University Press, 2017.
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