UNITED NATION. (1972). GUIDELINES FOR PROJECT EVALUATION. OXFORD & IBH PUBLISHING CO.
芝加哥风格引文UNITED 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：这些引文格式不一定是100％准确.