APA (7th ed.) Citation

Willis, M., & Purcell, H. (1700). Two catch's for three voices. publisher not identified.

Chicago Style (17th ed.) Citation

Willis, Mr, and Henry Purcell. Two Catch's for Three Voices. [London: publisher not identified, 1700.

MLA (9th ed.) Citation

Willis, Mr, and Henry Purcell. Two Catch's for Three Voices. publisher not identified, 1700.