Birdsall, N., Levine, R., & Ibrahim, A. (2005). Towards universal primary education: Investments, incentives, and institutions. Sterling, Va. : Earthscan.
Lua i Stíl Chicago (17ú heag.)Birdsall, Nancy, Ruth Levine, agus Amina Ibrahim. Towards Universal Primary Education: Investments, Incentives, and Institutions. London: Sterling, Va. : Earthscan, 2005.
Lua MLA (9ú heag.)Birdsall, Nancy, et al. Towards Universal Primary Education: Investments, Incentives, and Institutions. Sterling, Va. : Earthscan, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.