APA (7th ed.) Citation

Althusius, J., Janssen, H., & Wyduckel, D. (2003). Politik. Duncker & Humblot.

Chicago Style (17th ed.) Citation

Althusius, Johannes, Heinrich Janssen, and Dieter Wyduckel. Politik. Berlin: Duncker & Humblot, 2003.

MLA (9th ed.) Citation

Althusius, Johannes, et al. Politik. Duncker & Humblot, 2003.