Downing, R. I. (1958). National superannuation: Means test or contributionsn The 28th Joseph Fisher lecture in commerce, given in Adelaide on September 24, 1958. Griffin Press.
Dyfyniad Arddull ChicagoDowning, Richard Ivan. National Superannuation: Means Test or Contributionsn The 28th Joseph Fisher Lecture in Commerce, Given in Adelaide on September 24, 1958. Adelaide: Griffin Press, 1958.
Dyfyniad MLADowning, Richard Ivan. National Superannuation: Means Test or Contributionsn The 28th Joseph Fisher Lecture in Commerce, Given in Adelaide on September 24, 1958. Griffin Press, 1958.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.