MLA

Portsmouth Theatre (Portsmouth, England). On Friday evening, being the 11th of August, will be perform'd an historical play, call'd Richard the Third ... : to which will be added a pantomime entertainment, call'd, The transmutations of Harlequin ... tickets to be had at the Fountain ... and of Mr. Gates. [1758]. https://collections.library.yale.edu/catalog/33208763.

APA, 6th edition

Portsmouth Theatre (Portsmouth, England). ([1758])[On Friday evening, being the 11th of August, will be perform'd an historical play, call'd Richard the Third ... : to which will be added a pantomime entertainment, call'd, The transmutations of Harlequin ... tickets to be had at the Fountain ... and of Mr. Gates]. https://collections.library.yale.edu/catalog/33208763.