(1978). Econometric contributions to public policy: Proceedings of a conference held by the International Economic Association at Urbino, Italy. Macmillan.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Econometric Contributions to Public Policy: Proceedings of a Conference Held by the International Economic Association at Urbino, Italy. London: Macmillan, 1978.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Econometric Contributions to Public Policy: Proceedings of a Conference Held by the International Economic Association at Urbino, Italy. Macmillan, 1978.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.