UNITED NATION. (1972). GUIDELINES FOR PROJECT EVALUATION. OXFORD & IBH PUBLISHING CO.
Chicago Style (17th ed.) CitationUNITED NATION. GUIDELINES FOR PROJECT EVALUATION. NEW DELHI: OXFORD & IBH PUBLISHING CO, 1972.
MLA引文UNITED NATION. GUIDELINES FOR PROJECT EVALUATION. OXFORD & IBH PUBLISHING CO, 1972.
警告:這些引文格式不一定是100%准確.