Ball, W. (1984). A sense of direction: Some observations on the art of directing. Drama Book Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBall, William. A Sense of Direction: Some Observations on the Art of Directing. New York: Drama Book Publishers, 1984.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBall, William. A Sense of Direction: Some Observations on the Art of Directing. Drama Book Publishers, 1984.
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