Παραπομπή APA

Clarke, W. M., & Pulay, G. (1970). World's money: How its works. George allen and unwin ltd.

Παραπομπή Chicago Style

Clarke, William M., και George Pulay. World's Money: How Its Works. London: George allen and unwin ltd, 1970.

Παραπομπή MLA

Clarke, William M., και George Pulay. World's Money: How Its Works. George allen and unwin ltd, 1970.