MLA

Theatre Royal (York, England). On Thursday evening, May 14, 1801, their Majesties servants will perform the favourite comedy, called A cure for the heart ache ... : after which, a comic opera, called The rival soldiers ... to which will be added, a musical piece, in one act, called The honest Yorkshireman .... [1801]. https://collections.library.yale.edu/catalog/33208153.

APA, 6th edition

Theatre Royal (York, England). ([1801])[On Thursday evening, May 14, 1801, their Majesties servants will perform the favourite comedy, called A cure for the heart ache ... : after which, a comic opera, called The rival soldiers ... to which will be added, a musical piece, in one act, called The honest Yorkshireman ...]. https://collections.library.yale.edu/catalog/33208153.