Ball, W. (1984). A sense of direction: Some observations on the art of directing. Drama Book Publishers.
Lua i Stíl Chicago (17ú heag.)Ball, William. A Sense of Direction: Some Observations on the Art of Directing. New York: Drama Book Publishers, 1984.
Lua MLA (9ú heag.)Ball, William. A Sense of Direction: Some Observations on the Art of Directing. Drama Book Publishers, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.