Παραπομπή APA
Fisher, I. 1. (1977). The theory of interest: As determined by impatience to spend income and opportunity to invest it. Philadelphia: Porcupine Press.
Παραπομπή Chicago StyleFisher, Irving 1867-1947. The Theory of Interest: As Determined By Impatience to Spend Income and Opportunity to Invest It. Philadelphia: Porcupine Press, 1977.
Παραπομπή MLAFisher, Irving 1867-1947. The Theory of Interest: As Determined By Impatience to Spend Income and Opportunity to Invest It. Philadelphia: Porcupine Press, 1977.
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