Jeffreys, H. (1961). Theory of probability (3rd ed.). Oxford University.
Dyfyniad Arddull ChicagoJeffreys, Harold. Theory of Probability. 3rd ed. London: Oxford University, 1961.
Dyfyniad MLAJeffreys, Harold. Theory of Probability. 3rd ed. Oxford University, 1961.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.