Maxwell, Joseph Alex, 1941- Qualitative research design : An interactive approach / Joseph A. Maxwell. - 2nd ed. - Thousand Oaks : CA: Sage Publications, 2005. - xiv, 175p ; 22 cm. - Applied social research methods series ; no. 41 . Includes bibliographical references and index. Open access. ISBN: 0761926089 Subjects--Topical Terms: Research--Methodology.