APA
Harris D J,, . (1991). Cases and materials on international law. London: Sweet & Maxwell.
Chicago
Harris D J,, . 1991. Cases and materials on international law. London: Sweet & Maxwell.
Harvard
Harris D J,, . (1991). Cases and materials on international law. London: Sweet & Maxwell.
MLA
Harris D J,, . Cases and materials on international law. London: Sweet & Maxwell. 1991.