Knight, F. H. (1971). Risk, uncertainty and profit ([1st ed. reprinted] with an introduction by George J. Stigler.). University of Chicago Press.
Dyfyniad Arddull ChicagoKnight, Frank H. Risk, Uncertainty and Profit. [1st ed. reprinted] with an introduction by George J. Stigler. Chicago: University of Chicago Press, 1971.
Dyfyniad MLAKnight, Frank H. Risk, Uncertainty and Profit. [1st ed. reprinted] with an introduction by George J. Stigler. University of Chicago Press, 1971.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.