Speziale, Helen Streubert Qualitative research in nursing : advancing the humanistic imperative / Helen J. Streubert Speziale, Dona R. Carpenter. - 4th ed. - Philadelphia : Lippincott Williams & Wilkins, c2007 - xvii, 477 p. ; 24 cm. Includes bibliographical references and index. ISBN: 0-7817-6313-4 Subjects--Topical Terms: Nursing--Research--MethodologySociology--Research--Methodology