APA

,, . (1989). United Nations commission on international law year book.Vol.XX. New York: United Nations.

Chicago

,, . 1989. United Nations commission on international law year book.Vol.XX. New York: United Nations.

Harvard

,, . (1989). United Nations commission on international law year book.Vol.XX. New York: United Nations.

MLA

,, . United Nations commission on international law year book.Vol.XX. New York: United Nations. 1989.