National Research Council (U.S.). Board on Science, Technology, and Economic Policy, National Research Council (U.S.). Committee on National Statistics, ebrary, Inc, & Mackie, C. D. (2009). Intangible assets: Measuring and enhancing their contribution to corporate value and economic. National Academies Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Research Council (U.S.). Board on Science, Technology, and Economic Policy, National Research Council (U.S.). Committee on National Statistics, Inc ebrary, و Christopher D. Mackie. Intangible Assets: Measuring and Enhancing Their Contribution to Corporate Value and Economic. Washington, D.C.: National Academies Press, 2009.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Research Council (U.S.). Board on Science, Technology, and Economic Policy, et al. Intangible Assets: Measuring and Enhancing Their Contribution to Corporate Value and Economic. National Academies Press, 2009.