Bogdan, Robert C. Qualitative research for education : an introduction to theory a nd methods / Robert C. Bogdan, Sari Knopp Bilken. - 4th ed. - Boston : Allyn and Bacon, 24 cm. - ix, 291 p. : ill. ; 24cm Includes bibliographical references and index. ISBN: 0205375561 Subjects--Topical Terms: Education--Research.Education.Research--Methodology.Research. Dewey Class. No.: 370.72