MLA

Portsmouth Theatre (Portsmouth, England). At the theatre in Portsmouth, this present Tuesday, being the 7th of August, will be presented a comedy, call'd The beaux stratgem ... : to which will be added a farce, call'd The diversions of the morning ... tickets to be had at the Fountain ... and Two Blue Posts, on the point. [1759]. https://collections.library.yale.edu/catalog/33208729.

APA, 6th edition

Portsmouth Theatre (Portsmouth, England). ([1759])[At the theatre in Portsmouth, this present Tuesday, being the 7th of August, will be presented a comedy, call'd The beaux stratgem ... : to which will be added a farce, call'd The diversions of the morning ... tickets to be had at the Fountain ... and Two Blue Posts, on the point]. https://collections.library.yale.edu/catalog/33208729.