Cita APA (7th ed.)

Weisstein, U., & Bernhart, W. (2006). Selected essays on opera. Rodopi.

Cita Chicago (17th ed.)

Weisstein, Ulrich, i Walter Bernhart. Selected Essays on Opera. Amsterdam ; New York: Rodopi, 2006.

Cita MLA (9th ed.)

Weisstein, Ulrich, i Walter Bernhart. Selected Essays on Opera. Rodopi, 2006.