APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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