Richards, T. (2008). Heart of practice: Within the Workcenter of Jerzy Grotowski and Thomas Richards. Routledge.
Lua i Stíl Chicago (17ú heag.)Richards, Thomas. Heart of Practice: Within the Workcenter of Jerzy Grotowski and Thomas Richards. London ; New York: Routledge, 2008.
Lua MLA (9ú heag.)Richards, Thomas. Heart of Practice: Within the Workcenter of Jerzy Grotowski and Thomas Richards. Routledge, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.