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Lua i Stíl Chicago (17ú heag.)Belli, Pedro. Economic Analysis of Investment Operations: Analytical Tools and Practical Applications. Washington: the international bank for reconstrucion and development, 2001.
Lua MLA (9ú heag.)Belli, Pedro. Economic Analysis of Investment Operations: Analytical Tools and Practical Applications. the international bank for reconstrucion and development, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.