Silverman, D. (2016). Qualitative research (Fourth edition.). Sage.
Lua i Stíl Chicago (17ú heag.)Silverman, David. Qualitative Research. Fourth edition. Los Angeles: Sage, 2016.
Lua MLA (8ú heag.)Silverman, David. Qualitative Research. Fourth edition. Sage, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.