Flick, U. (2009). An introduction to qualitative research (Forth edition.). Sage Publications.
芝加哥风格引文Flick, Uwe. An Introduction to Qualitative Research. Forth edition. Los Angeles ; New Delhi: Sage Publications, 2009.
MLA引文Flick, Uwe. An Introduction to Qualitative Research. Forth edition. Sage Publications, 2009.
警告：这些引文格式不一定是100％准确.