APA

,, . (1981). United Nations commission on international law year book. Vol.XII. New York: United Nations.

Chicago

,, . 1981. United Nations commission on international law year book. Vol.XII. New York: United Nations.

Harvard

,, . (1981). United Nations commission on international law year book. Vol.XII. New York: United Nations.

MLA

,, . United Nations commission on international law year book. Vol.XII. New York: United Nations. 1981.