United nations. Guide to practical project appraisal: Social benefit-cost analysis in deveoping countries. Oxford & IBH publishing co pvt ltd.
Chicago-tyylinen lähdeviittausUnited nations. Guide to Practical Project Appraisal: Social Benefit-cost Analysis in Deveoping Countries. New Delhi: Oxford & IBH publishing co pvt ltd.
MLA-viiteUnited nations. Guide to Practical Project Appraisal: Social Benefit-cost Analysis in Deveoping Countries. Oxford & IBH publishing co pvt ltd.
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