United Nations Industrial Development Organisation. (1978). Guide to Pracatical Project Appraisal: :Social Benefit-Cost Analysis in Developing Countries. OUP.
Chicago Stili AlıntıUnited Nations Industrial Development Organisation. Guide to Pracatical Project Appraisal: :Social Benefit-Cost Analysis in Developing Countries. New York: OUP, 1978.
MLA AlıntıUnited Nations Industrial Development Organisation. Guide to Pracatical Project Appraisal: :Social Benefit-Cost Analysis in Developing Countries. OUP, 1978.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..