United Nations Industrial Development Organisation. (1978). Guide to Pracatical Project Appraisal: :Social Benefit-Cost Analysis in Developing Countries. OUP.
استشهاد بنمط شيكاغوUnited Nations Industrial Development Organisation. Guide to Pracatical Project Appraisal: :Social Benefit-Cost Analysis in Developing Countries. New York: OUP, 1978.
MLA استشهادUnited Nations Industrial Development Organisation. Guide to Pracatical Project Appraisal: :Social Benefit-Cost Analysis in Developing Countries. OUP, 1978.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.