Ziółkowski, A., & Ziółkowski, G. (2015). Voices from within: Grotowski's Polish collaborators. Polish Theater Perspectives.
Chicago-viite (17. p.)Ziółkowski, Allain, ja Grzegorz Ziółkowski. Voices from Within: Grotowski's Polish Collaborators. London: Polish Theater Perspectives, 2015.
MLA-viite (9. p.)Ziółkowski, Allain, ja Grzegorz Ziółkowski. Voices from Within: Grotowski's Polish Collaborators. Polish Theater Perspectives, 2015.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.