Spolin, V., & Sills, C. (2010). Theater games for rehearsal: A director's handbook (Updated ed.). Northwestern University Press.

Spolin, Viola, and Carol Sills. Theater Games for Rehearsal: A Director's Handbook. Updated ed. Evanston, Ill.: Northwestern University Press, 2010.

Spolin, Viola, and Carol Sills. Theater Games for Rehearsal: A Director's Handbook. Updated ed. Northwestern University Press, 2010.