Parsley, D. C., & Wei, S. (2000). Explaining the border effect: The role of exchange rate variability, shipping costs and geography. National Bureau of Economic Research.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Parsley, David C., و Shang-Jin Wei. Explaining the Border Effect: The Role of Exchange Rate Variability, Shipping Costs and Geography. Cambridge: National Bureau of Economic Research, 2000.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Parsley, David C., و Shang-Jin Wei. Explaining the Border Effect: The Role of Exchange Rate Variability, Shipping Costs and Geography. National Bureau of Economic Research, 2000.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.