Flick,Uwe. (2014). An Introduction to qualitative Research (5th.). Sage.
Chicago Style aipamenaFlick,Uwe. An Introduction to Qualitative Research. 5th. New Delhi: Sage, 2014.
MLA aipamenaFlick,Uwe. An Introduction to Qualitative Research. 5th. Sage, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.