APA
United Nations Head Wuarters Library, United Nations Head Wuarters Library, . (1971). Index to proceedings of the economic and social co. New York: United Nations U S A.
Chicago
United Nations Head Wuarters Library, United Nations Head Wuarters Library, . 1971. Index to proceedings of the economic and social co. New York: United Nations U S A.
Harvard
United Nations Head Wuarters Library, United Nations Head Wuarters Library, . (1971). Index to proceedings of the economic and social co. New York: United Nations U S A.
MLA
United Nations Head Wuarters Library, United Nations Head Wuarters Library, . Index to proceedings of the economic and social co. New York: United Nations U S A. 1971.
