APA (7th ed.) Citation

Krenek, E., Arthur, K., & Schmiedel, R. (1999). Italian ballads: Op. 77b. Orfeo.

Chicago Style (17th ed.) Citation

Krenek, Ernst, Katherine Arthur, and Reinhard Schmiedel. Italian Ballads: Op. 77b. München: Orfeo, 1999.

MLA (9th ed.) Citation

Krenek, Ernst, et al. Italian Ballads: Op. 77b. Orfeo, 1999.