APA (7th ed.) Citation

Schmidt, H., & Jones, T. l. (1968). I do, I do. Portfolio Music.

Chicago Style (17th ed.) Citation

Schmidt, Harvey, and Tom librettist Jones. I Do, I Do. New York: Portfolio Music, 1968.

MLA (9th ed.) Citation

Schmidt, Harvey, and Tom librettist Jones. I Do, I Do. Portfolio Music, 1968.