Zeigler, J. W. (1973). Regional theatre: The revolutionary stage. University of Minnesota Press.
Lua i Stíl Chicago (17ú heag.)Zeigler, Joseph Wesley. Regional Theatre: The Revolutionary Stage. Minneapolis: University of Minnesota Press, 1973.
Lua MLA (9ú heag.)Zeigler, Joseph Wesley. Regional Theatre: The Revolutionary Stage. University of Minnesota Press, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.