Psacharopoulos, G. (1990). Why educational policies can fail: An overview of selected African experiences. World Bank.
Lua i Stíl Chicago (17ú heag.)Psacharopoulos, George. Why Educational Policies Can Fail: An Overview of Selected African Experiences. Washington: World Bank, 1990.
Lua MLA (9ú heag.)Psacharopoulos, George. Why Educational Policies Can Fail: An Overview of Selected African Experiences. World Bank, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.