APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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