APA استشهاد

Flick, U. (2009). An Introduction to qualitative research (4th ed.). Sage Publications.

استشهاد بنمط شيكاغو

Flick, Uwe. An Introduction to Qualitative Research. 4th ed. New Delhi: Sage Publications, 2009.

MLA استشهاد

Flick, Uwe. An Introduction to Qualitative Research. 4th ed. Sage Publications, 2009.