Silverman, D. (2013). Doing qualitative research (Fourth edition.). Sage.
Chicago-viite (17. p.)Silverman, David. Doing Qualitative Research. Fourth edition. London: Sage, 2013.
MLA-viite (8. p.)Silverman, David. Doing Qualitative Research. Fourth edition. Sage, 2013.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.