Clarke, W. M., & Pulay, G. (1970). World's money: How its works. George allen and unwin ltd.
Παραπομπή Chicago StyleClarke, William M., και George Pulay. World's Money: How Its Works. London: George allen and unwin ltd, 1970.
Παραπομπή MLAClarke, William M., και George Pulay. World's Money: How Its Works. George allen and unwin ltd, 1970.
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