Bell, J. (1999). Doing your research project (3rd.). Viva.
Lua i Stíl Chicago (17ú heag.)Bell, Judith. Doing Your Research Project. 3rd. New Delhi: Viva, 1999.
Lua MLA (9ú heag.)Bell, Judith. Doing Your Research Project. 3rd. Viva, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.