MLA

Theatre Royal (York, England). On Saturday evening, May 28, 1803, their Majesties' Servants will perform the last new comedy, (never acted here,) call'd The marriage promise ... : after which, a musical entertainment, called Rosina .... [1803]. https://collections.library.yale.edu/catalog/33208309.

APA, 6th edition

Theatre Royal (York, England). ([1803])[On Saturday evening, May 28, 1803, their Majesties' Servants will perform the last new comedy, (never acted here,) call'd The marriage promise ... : after which, a musical entertainment, called Rosina ...]. https://collections.library.yale.edu/catalog/33208309.