Format: in text citation
The importance of local theatre companies to the success and variance of cultural events in a town cannot be underestimated (Surname, Year).
Format: reference
Author surname, initials. (Year of performance) Title. Directed by. Adapted by. Performance company/performer. Performance venue, location. [Date of performance].
Example: in text citation
The importance of local theatre companies to the success and variance of cultural events in a town cannot be underestimated (Braithwaite, 2013).
Example: reference
Braithwaite, E. R. (2013) To Sir, with love. Directed by Mark Babych. Adapted by Ayub Khan Din. Northampton and Touring Consortium Theatre Company. Royal Theatre, Northampton. [6 September 2013].