The national research council. (1976). Systems analysis and operations research: A tool for policy and program planning for developing countries. Washington D.C: National Academy of sciences.
Dyfyniad Arddull ChicagoThe national research council. Systems Analysis and Operations Research: A Tool for Policy and Program Planning for Developing Countries. Washington D.C: National Academy of sciences, 1976.
Dyfyniad MLAThe national research council. Systems Analysis and Operations Research: A Tool for Policy and Program Planning for Developing Countries. Washington D.C: National Academy of sciences, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.