Irwin, T. (2007). Government guarantees: Allocating and valuing risk in privately financed infrastructure projects. World Bank.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Irwin, Timothy. Government Guarantees: Allocating and Valuing Risk in Privately Financed Infrastructure Projects. Washington, D.C.: World Bank, 2007.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Irwin, Timothy. Government Guarantees: Allocating and Valuing Risk in Privately Financed Infrastructure Projects. World Bank, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.