MCKENZIE, R. B. (1980). Ekonomi issues in public policies. McGraw-Hill.
Dyfyniad Arddull ChicagoMCKENZIE, Richard B. Ekonomi Issues in Public Policies. New York: McGraw-Hill, 1980.
Dyfyniad MLAMCKENZIE, Richard B. Ekonomi Issues in Public Policies. McGraw-Hill, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.