Yegidis, Bonnie L. Research methods for social workers / Bonnie L. Yegidis, Robert W. Weinbach and Laura L. Myers - 7th ed. - Boston : Allyn & Bacon, 2012. - xix, 338 p. ; 24 cm. Includes bibliographical references and index. ISBN: 9780205820115 RM301.19 Subjects--Topical Terms: Social service--Research--Methodology.