Spencer,Bruce D. (1980). Benefit-cost analysis of data used to allocate funds. Springer-Verlag.
Dyfyniad Arddull ChicagoSpencer,Bruce D. Benefit-cost Analysis of Data Used to Allocate Funds. New York: Springer-Verlag, 1980.
Dyfyniad MLASpencer,Bruce D. Benefit-cost Analysis of Data Used to Allocate Funds. Springer-Verlag, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.