United Nations industrial development organizations. (1978). Guide to practical project appraisal: Social benefit-cost analysis in developing countries. United Nations.
芝加哥风格引文United Nations industrial development organizations. Guide to Practical Project Appraisal: Social Benefit-cost Analysis in Developing Countries. New York: United Nations, 1978.
MLA引文United Nations industrial development organizations. Guide to Practical Project Appraisal: Social Benefit-cost Analysis in Developing Countries. United Nations, 1978.
警告：这些引文格式不一定是100％准确.