Cita APA (7th ed.)

Berges, R. (1961). Opera: Origins and side lights. Thomas Yoseloff.

Cita Chicago (17th ed.)

Berges, Ruth. Opera: Origins and Side Lights. Nueva York: Thomas Yoseloff, 1961.

Cita MLA (9th ed.)

Berges, Ruth. Opera: Origins and Side Lights. Thomas Yoseloff, 1961.

Atenció: Aquestes cites poden no estar 100% correctes.