APA (7th ed.) Citation
Kelsen, H., & Perelman, C. (1959). Le droit naturel. Presses Universitaires de France (PUF).
Chicago Style (17th ed.) Citation
Kelsen, Hans, and Chaïm Perelman. Le Droit Naturel. Paris: Presses Universitaires de France (PUF), 1959.
MLA (9th ed.) Citation
Kelsen, Hans, and Chaïm Perelman. Le Droit Naturel. Presses Universitaires de France (PUF), 1959.
Warning: These citations may not always be 100% accurate.