APA (7th ed.) Citation

Lady of quality, Gadbury, J., & Powis, E. H. (1679). A ballad upon the Popish Plot. [publisher not identified].

Chicago Style (17th ed.) Citation

Lady of quality, John Gadbury, and Elizabeth Herbert Powis. A Ballad upon the Popish Plot. [London?]: [publisher not identified], 1679.

MLA (9th ed.) Citation

Lady of quality, et al. A Ballad upon the Popish Plot. [publisher not identified], 1679.