Silverman, D. (2013). Doing qualitative research (Fourth edition.). Sage.
Chicago Style aipamenaSilverman, David. Doing Qualitative Research. Fourth edition. London: Sage, 2013.
MLA aipamenaSilverman, David. Doing Qualitative Research. Fourth edition. Sage, 2013.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.