Silverman, D. (2013). Doing qualitative research (4th ed.). Sage.
Lua i Stíl Chicago (17ú heag.)Silverman, David. Doing Qualitative Research. 4th ed. Los Angelws: Sage, 2013.
Lua MLA (9ú heag.)Silverman, David. Doing Qualitative Research. 4th ed. Sage, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.