APA (7th ed.) Citation

Flick, U. (2009). An introduction to qualitative research (4th ed.).

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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