APA (7th ed.) Citation

Rappl, E. (1967). Wagner-Opernführer. G. Bosse.

Chicago Style (17th ed.) Citation

Rappl, Erich. Wagner-Opernführer. Regensburg: G. Bosse, 1967.

MLA (9th ed.) Citation

Rappl, Erich. Wagner-Opernführer. G. Bosse, 1967.

Warning: These citations may not always be 100% accurate.