Conforti, B., & Focarelli, C. (2010). The law and practice of the United Nations (4th rev. ed.). Martinus Nijhoff Publishers.

Conforti, Benedetto, and Carlo Focarelli. The Law and Practice of the United Nations. 4th rev. ed. Boston: Martinus Nijhoff Publishers, 2010.

Conforti, Benedetto, and Carlo Focarelli. The Law and Practice of the United Nations. 4th rev. ed. Martinus Nijhoff Publishers, 2010.