APA (7th ed.) Citation

Hellmann, G. (1917). Über strenge Winter. de Gruyter.

Chicago Style (17th ed.) Citation

Hellmann, Gustav. Über Strenge Winter. Berlin: de Gruyter, 1917.

MLA (9th ed.) Citation

Hellmann, Gustav. Über Strenge Winter. de Gruyter, 1917.

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