United nations industrial development organizations. (1978). Guide to practical project appraisal: Social benefit cost analysis in developing countries. Oxford and IBH Publishing Co.Pvt.Ltd.
Dyfyniad Arddull ChicagoUnited nations industrial development organizations. Guide to Practical Project Appraisal: Social Benefit Cost Analysis in Developing Countries. New Delhi: Oxford and IBH Publishing Co.Pvt.Ltd, 1978.
Dyfyniad MLAUnited nations industrial development organizations. Guide to Practical Project Appraisal: Social Benefit Cost Analysis in Developing Countries. Oxford and IBH Publishing Co.Pvt.Ltd, 1978.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.