Gibson William J. (2009). Working with Qualitative Data. Sage Publications.
Lua i Stíl Chicago (17ú heag.)Gibson William J. Working with Qualitative Data. London: Sage Publications, 2009.
Lua MLA (9ú heag.)Gibson William J. Working with Qualitative Data. Sage Publications, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.