APA

,, . (1974). Year book of the United Nations, 1971. Geneva: UNO.

Chicago

,, . 1974. Year book of the United Nations, 1971. Geneva: UNO.

Harvard

,, . (1974). Year book of the United Nations, 1971. Geneva: UNO.

MLA

,, . Year book of the United Nations, 1971. Geneva: UNO. 1974.