MLA

Gay, John, 1685-1732. The beggars opera : as it is acted at the Theatre-Royal in Lincolns-Inn-Fields / written by Mr. Gay .... 1728. https://collections.library.yale.edu/catalog/2020479.

APA, 6th edition

Gay, John, 1685-1732. (1728)[The beggars opera : as it is acted at the Theatre-Royal in Lincolns-Inn-Fields / written by Mr. Gay ...]. https://collections.library.yale.edu/catalog/2020479.