APA引文

United Nations. (1972). Catalogue of periodicals, annuals and special series currently received at the United Nations Library. s.n.

芝加哥风格引文

United Nations. Catalogue of Periodicals, Annuals and Special Series Currently Received at the United Nations Library. Geneva: s.n, 1972.

MLA引文

United Nations. Catalogue of Periodicals, Annuals and Special Series Currently Received at the United Nations Library. s.n, 1972.

警告:这些引文格式不一定是100%准确.