Blaxter, L., Hughes, C., & Tight, M. (2010). How to research (4th ed.). McGraw-Hill/Open University Press.
Lua i Stíl Chicago (17ú heag.)Blaxter, Loraine, Christina Hughes, agus Malcolm Tight. How to Research. 4th ed. Maidenhead: McGraw-Hill/Open University Press, 2010.
Lua MLA (9ú heag.)Blaxter, Loraine, et al. How to Research. 4th ed. McGraw-Hill/Open University Press, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.