Duvall, J. B. (1979). The Induced innovation hypothesis and biased technological change in the domestic telecommunications industry: A microeconometric analysis. The American University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Duvall, Jerry Brandon. The Induced Innovation Hypothesis and Biased Technological Change in the Domestic Telecommunications Industry: A Microeconometric Analysis. Washington: The American University, 1979.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Duvall, Jerry Brandon. The Induced Innovation Hypothesis and Biased Technological Change in the Domestic Telecommunications Industry: A Microeconometric Analysis. The American University, 1979.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.