MLA

Theatre Royal (York, England). On Tuesday evening, April 5, will be presented, an opera, (never performed here) called The adopted child ... to which will be added a farce, (in two acts) called Florizel and Perdita; or, The sheep shearing ... after which a farce, (in two acts) called Retaliation; or, The world as it goes .... [1801?]. https://collections.library.yale.edu/catalog/33208125.

APA, 6th edition

Theatre Royal (York, England). ([1801?])[On Tuesday evening, April 5, will be presented, an opera, (never performed here) called The adopted child ... to which will be added a farce, (in two acts) called Florizel and Perdita; or, The sheep shearing ... after which a farce, (in two acts) called Retaliation; or, The world as it goes ...]. https://collections.library.yale.edu/catalog/33208125.