APA-referens (7:e uppl.)

Aston, E., & Savona, G. (1991). Theatre as sign-system: A semiotics of text and performance. Routledge.

Chicago-referens (17:e uppl.)

Aston, Elaine, och George Savona. Theatre as Sign-system: A Semiotics of Text and Performance. London ; New York: Routledge, 1991.

MLA-referens (9:e uppl.)

Aston, Elaine, och George Savona. Theatre as Sign-system: A Semiotics of Text and Performance. Routledge, 1991.