APA (7th ed.) Citation

Albert, M., & Hilkermeier, L. (2004). Observing international relations: Niklas Luhmann and world politics. Routledge.

Chicago Style (17th ed.) Citation

Albert, Mathias, and Lena Hilkermeier. Observing International Relations: Niklas Luhmann and World Politics. London ; New York: Routledge, 2004.

MLA (9th ed.) Citation

Albert, Mathias, and Lena Hilkermeier. Observing International Relations: Niklas Luhmann and World Politics. Routledge, 2004.