APA (7th ed.) Citation

Schumann, R., & Wingler, K. Karl Wingler spielt Schumann.

Chicago Style (17th ed.) Citation

Schumann, Robert, and Karl Wingler. Karl Wingler Spielt Schumann.

MLA (9th ed.) Citation

Schumann, Robert, and Karl Wingler. Karl Wingler Spielt Schumann.

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