APA

,, . (1977). Year book of the United Nations, 1977. New York: UNO.

Chicago

,, . 1977. Year book of the United Nations, 1977. New York: UNO.

Harvard

,, . (1977). Year book of the United Nations, 1977. New York: UNO.

MLA

,, . Year book of the United Nations, 1977. New York: UNO. 1977.