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Dyfyniad Arddull ChicagoMaki, Uskali. Methodology of Positive Economics: Reflections on the Milton Friedman Legacy. New Delhi: Cambridge university press, 2009.
Dyfyniad MLAMaki, Uskali. Methodology of Positive Economics: Reflections on the Milton Friedman Legacy. Cambridge university press, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.