Lua APA (7ú heag.)

Silverman, D. (1997). Qualitative research: Theory, method, and practice. Sage Publications.

Lua i Stíl Chicago (17ú heag.)

Silverman, David. Qualitative Research: Theory, Method, and Practice. London ; Thousand Oaks, Calif. ; New Delhi: Sage Publications, 1997.

Lua MLA (8ú heag.)

Silverman, David. Qualitative Research: Theory, Method, and Practice. Sage Publications, 1997.

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