MLA

Portsmouth Theatre (Portsmouth, England). At the theatre in Portsmouth, this present Friday, being the 27th of July, will be presented The beggar's opera ... : to which will be added (by particular desire) a farce, call'd, The author ... tickets to be had at the Fountain...and Two Blue Posts, on the point. [1759]. https://collections.library.yale.edu/catalog/33208664.

APA, 6th edition

Portsmouth Theatre (Portsmouth, England). ([1759])[At the theatre in Portsmouth, this present Friday, being the 27th of July, will be presented The beggar's opera ... : to which will be added (by particular desire) a farce, call'd, The author ... tickets to be had at the Fountain...and Two Blue Posts, on the point]. https://collections.library.yale.edu/catalog/33208664.