Cohen, Ronald Jay. Psychological testing and assessment : an introduction to tests and measurement/ Ronald Jay Cohen; Mark E. Swerdlik. - Sixth edition - Boston : McGraw-Hill Higher Education, c2007. - xxii, (various pagings): illustrations; 25 cm. Includes bibliographical references and index. ISBN: 978-007-125910-1 Subjects--Topical Terms: Psychological tests --Textbooks. Psychometrics --Textbooks. Dewey Class. No.: DC 150.287 / C66