DeVellis, Robert F. Scale development : theory and applications / by Robert F. DeVellis. - 2nd ed. - Thousand Oaks, Calif. : Sage Publications, Inc., 2003. - viii, 171 p. : ill. ; 23 cm. - Applied social research methods series ; 26 . Includes bibliographical references and index. ISBN: 9780761926054 Subjects--Topical Terms: Scaling (Social sciences) LC Class. No.: H61.27 / .D48 2003