Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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