APA (7th ed.) Citation

Krueger, R. A. (1994). Focus groups: A practical guide for applied research (2η έκδ.). Sage.

Chicago Style (17th ed.) Citation

Krueger, Richard A. Focus Groups: A Practical Guide for Applied Research. 2η έκδ. Thousand Oaks, Calif.: Sage, 1994.

MLA (8th ed.) Citation

Krueger, Richard A. Focus Groups: A Practical Guide for Applied Research. 2η έκδ. Sage, 1994.