MLA

Theatre Royal (York, England). On Saturday evening, April 5, 1800, will be presented a comedy, called, The busy body ... : after which, a musical piece, (in one act) called, The purse; or, The benevolent tar ... to which will be added, the pantomime sketch of Harlequin mariner; or, The clown turned foxhunter .... [1800]. https://collections.library.yale.edu/catalog/33208070.

APA, 6th edition

Theatre Royal (York, England). ([1800])[On Saturday evening, April 5, 1800, will be presented a comedy, called, The busy body ... : after which, a musical piece, (in one act) called, The purse; or, The benevolent tar ... to which will be added, the pantomime sketch of Harlequin mariner; or, The clown turned foxhunter ...]. https://collections.library.yale.edu/catalog/33208070.