Haan, W. J. d. (1996). The comovements between real activity and prices at different business cycle frequencies. National Bureau of Economic Research.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Haan, Wouter J. den. The Comovements Between Real Activity and Prices at Different Business Cycle Frequencies. Cambridge: National Bureau of Economic Research, 1996.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Haan, Wouter J. den. The Comovements Between Real Activity and Prices at Different Business Cycle Frequencies. National Bureau of Economic Research, 1996.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.