Rubin, Allen. Research methods for social work / Allen Rubin, Earl Babbie. - 3rd ed. - Pacific Grove : Brooks/Cole Pub. Co., c1997. - 1 v. (various pagings) : ill. ; 25 cm. Includes bibliographical references and index. ISBN: 0534263887 (acid-free paper) 9780534263881 Subjects--Topical Terms: Social service--Research--Methodology