Lua APA (7ú heag.)

Johnstone, K. (2019). Impro: Improvisation and the theatre. Bloomsbury Academic.

Lua i Stíl Chicago (17ú heag.)

Johnstone, Keith. Impro: Improvisation and the Theatre. London ; New York: Bloomsbury Academic, 2019.

Lua MLA (9ú heag.)

Johnstone, Keith. Impro: Improvisation and the Theatre. Bloomsbury Academic, 2019.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.