Jack, W. (1996). The Efficiency of VAT Implementation: A Comparative Study of Central and Eastern European Countries in Transition. International Monetary Fund.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Jack, William. The Efficiency of VAT Implementation: A Comparative Study of Central and Eastern European Countries in Transition. Washington, D.C.: International Monetary Fund, 1996.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Jack, William. The Efficiency of VAT Implementation: A Comparative Study of Central and Eastern European Countries in Transition. International Monetary Fund, 1996.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.