APA (7th ed.) Citation

Zweigert, K., & Kropholler, J. (1973). Sources of international uniform law. Sijthoff.

Chicago Style (17th ed.) Citation

Zweigert, Konrad, and Jan Kropholler. Sources of International Uniform Law. Leiden, Netherlands: Sijthoff, 1973.

MLA (8th ed.) Citation

Zweigert, Konrad, and Jan Kropholler. Sources of International Uniform Law. Sijthoff, 1973.

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