APA

,, . (1992). Year book of the United Nations, 1987. New York: UNO.

Chicago

,, . 1992. Year book of the United Nations, 1987. New York: UNO.

Harvard

,, . (1992). Year book of the United Nations, 1987. New York: UNO.

MLA

,, . Year book of the United Nations, 1987. New York: UNO. 1992.