Kurtz, E. B. (1937). The science of valuation and depreciation: Application of mortality laws of physical property in estimating and accounting. Ronald Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Kurtz, Edwin Bernard. The Science of Valuation and Depreciation: Application of Mortality Laws of Physical Property in Estimating and Accounting. N.Y.: Ronald Press, 1937.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Kurtz, Edwin Bernard. The Science of Valuation and Depreciation: Application of Mortality Laws of Physical Property in Estimating and Accounting. Ronald Press, 1937.
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