APA (7th ed.) Zitazioa
Crespy, D. A. (2013). Richard Barr: The playwright's producer. Southern Illinois University Press.
Chicago Style (17th ed.) Zitazioa
Crespy, David Allison. Richard Barr: The Playwright's Producer. Carbondale: Southern Illinois University Press, 2013.
MLA (9th ed.) Zitazioa
Crespy, David Allison. Richard Barr: The Playwright's Producer. Southern Illinois University Press, 2013.
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