Collier, P., & Dollar, D. (2004). Development Effectiveness: What Have We Learnt?
Lua i Stíl Chicago (17ú heag.)Collier, P., agus D. Dollar. Development Effectiveness: What Have We Learnt? 2004.
Lua MLA (9ú heag.)Collier, P., agus D. Dollar. Development Effectiveness: What Have We Learnt? 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.