Fisher, I. (1954). The theory of interest as determined by impatience to spend income and opportunity to invest it. Kelley & Millman.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Fisher, Irving. The Theory of Interest as Determined by Impatience to Spend Income and Opportunity to Invest It. New York: Kelley & Millman, 1954.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Fisher, Irving. The Theory of Interest as Determined by Impatience to Spend Income and Opportunity to Invest It. Kelley & Millman, 1954.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.