United nations industrial development organization. (1972). Guidelines for project evaluation. Oxford &IBH.
Dyfyniad Arddull ChicagoUnited nations industrial development organization. Guidelines for Project Evaluation. New Delhi: Oxford &IBH, 1972.
Dyfyniad MLAUnited nations industrial development organization. Guidelines for Project Evaluation. Oxford &IBH, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.