APA (7th ed.) Citation

Helmert, H. (1973). Friedrich Engels Adjutant der Revolution 1848/49. Urania Verlag.

Chicago Style (17th ed.) Citation

Helmert, Heinz. Friedrich Engels Adjutant Der Revolution 1848/49. Leipzig: Urania Verlag, 1973.

MLA (8th ed.) Citation

Helmert, Heinz. Friedrich Engels Adjutant Der Revolution 1848/49. Urania Verlag, 1973.

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