Belsky, J., Leyland, A., Barnes, J., & Melhuish, E. (2009). Sure start in England.
Lua i Stíl Chicago (17ú heag.)Belsky, J., A. Leyland, J. Barnes, agus E. Melhuish. Sure Start in England. 2009.
Lua MLA (9ú heag.)Belsky, J., et al. Sure Start in England. 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.