Malanczuk, P., & Akehurst, M. B. (1997). Akehurst's modern introduction to international law (7th rev. ed.). Routledge.

Malanczuk, Peter, and Michael Barton Akehurst. Akehurst's Modern Introduction to International Law. 7th rev. ed. London ; New York: Routledge, 1997.

Malanczuk, Peter, and Michael Barton Akehurst. Akehurst's Modern Introduction to International Law. 7th rev. ed. Routledge, 1997.