APA (7 वां संस्करण) प्रशस्ति पत्र

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

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

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

एमएलए (9वां संस्करण) प्रशस्ति पत्र

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