Belli, P. (2001). Economic analysis of investment operations: Analytical tools and practical applications. the international bank for reconstrucion and development.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Belli, Pedro. Economic Analysis of Investment Operations: Analytical Tools and Practical Applications. Washington: the international bank for reconstrucion and development, 2001.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Belli, Pedro. Economic Analysis of Investment Operations: Analytical Tools and Practical Applications. the international bank for reconstrucion and development, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.