Flick, U. An introduction to qualitative research - 4th - SAGE Publications New Delhi 2009 - 504p. - Qualitative research Quantitative research Research ethics Research design Verbal data Mediated data Online research Visual data ISBN: 9788132105688 Nat. Bib. No.: 7170 Nat. Bib. Agency Control No.: 5.001.5FLI Subjects--Topical Terms: Science and Technology Universal Decimal Class. No.: 5.001.5 1