Berry, S., Levinsohn, J., & Pakes, A. (1998). Differentiated products demand systems from a combination of micro and macro data: The new car market. National Bureau of Economic Research.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Berry, Steven, James Levinsohn, و Ariel Pakes. Differentiated Products Demand Systems from a Combination of Micro and Macro Data: The New Car Market. Cambridge: National Bureau of Economic Research, 1998.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Berry, Steven, et al. Differentiated Products Demand Systems from a Combination of Micro and Macro Data: The New Car Market. National Bureau of Economic Research, 1998.
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