APA Style

Tomuschat, C., Thouvenin, J. (2006). Fundamental Rules of The International Legal Order, The: Jus Cogens and Obligations Erga Omnes . Leiden ; Boston: Martinus Nijhoff Publishers.

MLA Style

Tomuschat, Christian., Thouvenin, Jean-Marc. "Fundamental Rules of The International Legal Order, The: Jus Cogens and Obligations Erga Omnes". Leiden ; Boston: Martinus Nijhoff Publishers, 2006. Books.