Gifford, A., & Santoni, G. J. (1979). Public economics: Politicians, property rights, and exchange. Dryden Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Gifford, Adam, و Gary J. Santoni. Public Economics: Politicians, Property Rights, and Exchange. Hinsdale, Ill.: Dryden Press, 1979.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Gifford, Adam, و Gary J. Santoni. Public Economics: Politicians, Property Rights, and Exchange. Dryden Press, 1979.