Marshall, C. Designing qualitative research / Catherine Marshall, Gretchen B. Rossman. - 6th ed. - New Delh: Sage Publications, c1999. - xvi, 224 p. : ill. ; 24 cm. Includes bibliographical references and index. ISBN: 9781452271002 TZS 125,808/= Subjects--Topical Terms: Social sciencesQualitative research. Dewey Class. No.: 300.72 MAR