APA (7th ed.) Citation

Kropotkin, P. A., & Gumplowicz, L. (1920). Die historische Rolle des Staates. Verl. "Der Syndikalist".

Chicago Style (17th ed.) Citation

Kropotkin, Pëtr Alekseevič, and Ludwig Gumplowicz. Die Historische Rolle Des Staates. Berlin: Verl. "Der Syndikalist", 1920.

MLA (9th ed.) Citation

Kropotkin, Pëtr Alekseevič, and Ludwig Gumplowicz. Die Historische Rolle Des Staates. Verl. "Der Syndikalist", 1920.

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