Mueller, D. C. (1989). Public choise II. University Press.
Dyfyniad Arddull ChicagoMueller, Dennis C. Public Choise II. University Press, 1989.
Dyfyniad MLAMueller, Dennis C. Public Choise II. University Press, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.