APA (7th ed.) Citation

Knoop, E. I. J. (1943). Archiv der Knop-Geschlechter. Christians.

Chicago Style (17th ed.) Citation

Knoop, Ernst I. J. Archiv Der Knop-Geschlechter. Hamburg: Christians, 1943.

MLA (8th ed.) Citation

Knoop, Ernst I. J. Archiv Der Knop-Geschlechter. Christians, 1943.