MLA

Theatre Royal (York, England). On Thursday evening, Feb. 20, 1800, will be presented Mr. Morton's favourite comedy, called A cure for the heart ache ... : after which, the musical farce of The Quaker .... [1800]. https://collections.library.yale.edu/catalog/33207953.

APA, 6th edition

Theatre Royal (York, England). ([1800])[On Thursday evening, Feb. 20, 1800, will be presented Mr. Morton's favourite comedy, called A cure for the heart ache ... : after which, the musical farce of The Quaker ...]. https://collections.library.yale.edu/catalog/33207953.