Bell, J., & Opie, C. (2002). Learning from research: Getting more from data. Open University Press.
Lua i Stíl Chicago (17ú heag.)Bell, Judith, agus Clive Opie. Learning from Research: Getting More from Data. Buckingham: Open University Press, 2002.
Lua MLA (9ú heag.)Bell, Judith, agus Clive Opie. Learning from Research: Getting More from Data. Open University Press, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.