APA (7th ed.) Citation

Wüllner, F., & Schwickerath, E. [. (1931). Franz Wüllners Chorübungen (Neubearb.). Ackermann.

Chicago Style (17th ed.) Citation

Wüllner, Franz, and Eberhard [Bearb.] Schwickerath. Franz Wüllners Chorübungen. Neubearb. München: Ackermann, 1931.

MLA (8th ed.) Citation

Wüllner, Franz, and Eberhard [Bearb.] Schwickerath. Franz Wüllners Chorübungen. Neubearb. Ackermann, 1931.

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