MLA

Theatre Royal (York, England). On Saturday evening, March 9th, 1805, their Majesties' Servants will perform a comedy, called Secrets worth knowing ... : after which, the farce of Love laughs at locksmiths .... [1805]. https://collections.library.yale.edu/catalog/33208205.

APA, 6th edition

Theatre Royal (York, England). ([1805])[On Saturday evening, March 9th, 1805, their Majesties' Servants will perform a comedy, called Secrets worth knowing ... : after which, the farce of Love laughs at locksmiths ...]. https://collections.library.yale.edu/catalog/33208205.