APA (7th ed.) Citation

Helfgot, D., & Beeman, W. O. (1993). The third line: The opera performer as interpreter. Schirmer Books u.a.

Chicago Style (17th ed.) Citation

Helfgot, Daniel, and William O. Beeman. The Third Line: The Opera Performer as Interpreter. New York u.a: Schirmer Books u.a, 1993.

MLA (9th ed.) Citation

Helfgot, Daniel, and William O. Beeman. The Third Line: The Opera Performer as Interpreter. Schirmer Books u.a, 1993.