Ziółkowski, A., & Ziółkowski, G. (2015). Voices from within: Grotowski's Polish collaborators. Polish Theater Perspectives.
Lua i Stíl Chicago (17ú heag.)Ziółkowski, Allain, agus Grzegorz Ziółkowski. Voices from Within: Grotowski's Polish Collaborators. London: Polish Theater Perspectives, 2015.
Lua MLA (9ú heag.)Ziółkowski, Allain, agus Grzegorz Ziółkowski. Voices from Within: Grotowski's Polish Collaborators. Polish Theater Perspectives, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.