APA (7th ed.) Citation

Koppin, R. O. (1915). Singendes Erz. Weckruf-Verl.

Chicago Style (17th ed.) Citation

Koppin, Richard O. Singendes Erz. Weimar: Weckruf-Verl, 1915.

MLA (9th ed.) Citation

Koppin, Richard O. Singendes Erz. Weckruf-Verl, 1915.

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