1 2 "Money Velocity". Federal Reserve Bank of St. Louis. สืบค้นเมื่อ October 28, 2013.
↑ Mishkin, Frederic S. The Economics of Money, Banking, and Financial Markets. Seventh Edition. Addison–Wesley. 2004. p. 520.
↑ Quoted in Hazlitt, Henry. 'Velocity of Circulation' in James Muir Waller (ed.). Money, the market, and the state: economic essays in honor of James Muir Waller. University of Georgia Press, 1968, p. 42.
