American Enterprise Institute for Public Policy Research & Fellner, W. Contemporary economic problems. American Enterprise Institute for Public Policy Research.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)American Enterprise Institute for Public Policy Research و William Fellner. Contemporary Economic Problems. Washington, D.C.: American Enterprise Institute for Public Policy Research.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)American Enterprise Institute for Public Policy Research و William Fellner. Contemporary Economic Problems. American Enterprise Institute for Public Policy Research.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.