APA استشهاد

Flick, U. (2014). an introduction to qualitative research (5.). Sage.

استشهاد بنمط شيكاغو

Flick, Uwe. An Introduction to Qualitative Research. 5. Los Angeles: Sage, 2014.

MLA استشهاد

Flick, Uwe. An Introduction to Qualitative Research. 5. Sage, 2014.