APA (7th ed.) Citation

Grube, E. (2014). Brief an meinen Freund Hugo /Ernst Grube. Hugo Höllenreiner.

Chicago Style (17th ed.) Citation

Grube, Ernst. "Brief an Meinen Freund Hugo /Ernst Grube." Hugo Höllenreiner 2014.

MLA (8th ed.) Citation

Grube, Ernst. "Brief an Meinen Freund Hugo /Ernst Grube." Hugo Höllenreiner, 2014.

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