Aston, E., & Savona, G. (1991). Theatre as Sign-System: A semiotics of text and performance. Routledge.
Citazione stile Chigago Style (17a edizione)Aston, Elaine, e George Savona. Theatre as Sign-System: A Semiotics of Text and Performance. New York: Routledge, 1991.
Citatione MLA (9a ed.)Aston, Elaine, e George Savona. Theatre as Sign-System: A Semiotics of Text and Performance. Routledge, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.