APA
Leben Charles,, . (2010). The advancement of international law. Oxford: Hart Publihsing.
Chicago
Leben Charles,, . 2010. The advancement of international law. Oxford: Hart Publihsing.
Harvard
Leben Charles,, . (2010). The advancement of international law. Oxford: Hart Publihsing.
MLA
Leben Charles,, . The advancement of international law. Oxford: Hart Publihsing. 2010.