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Lua i Stíl Chicago (17ú heag.)Helbo, André. Theory of Performing Arts. Amsterdam ; Philadelpha: John Benjamins, 1987.
Lua MLA (8ú heag.)Helbo, André. Theory of Performing Arts. John Benjamins, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.