Nolan, A., Cartmel, J., & Macfarlane, K. (2013). Research in early childhood. Sage.
Lua i Stíl Chicago (17ú heag.)Nolan, Andrea, Jennifer Cartmel, agus Kym Macfarlane. Research in Early Childhood. Los Angeles: Sage, 2013.
Lua MLA (9ú heag.)Nolan, Andrea, et al. Research in Early Childhood. Sage, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.