APA (7th ed.) Citation

Wildung, H., & Walburg, F. (1952). Richard Wagner. Beltz.

Chicago Style (17th ed.) Citation

Wildung, Heinrich, and Friedrich Walburg. Richard Wagner. Langensalza [u.a.]: Beltz, 1952.

MLA (9th ed.) Citation

Wildung, Heinrich, and Friedrich Walburg. Richard Wagner. Beltz, 1952.