Giugale, M. M. Economic Development. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Giugale, Marcelo M. Economic Development. Oxford University Press.
Lua MLA (9ú heag.)Giugale, Marcelo M. Economic Development. Oxford University Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.