Test Your IQ A Detailed Explanation of What IQ Means and How It Is Measured -- Including Eight Tests You Can Take by Hans Jurgen Eysenck, Darrin Evans Paperback, 224 Pages, Published 1995 by Penguin Books ISBN-13: 978-0-14-024962-0, ISBN: 0-14-024962-1
Know Your Own I.Q.(Updated) (Pelican) by Hans Jürgen: Eysenck Paperback, 192 Pages, Published 1962 by Penguin Books ISBN-13: 978-0-14-020516-9, ISBN: 0-14-020516-0
"Mosteller, F. The reliability of interviewers' ratings. In: Gauging Public Opinion. (
Ed. H. Cantril) Princeton: Princeton Univ. Press, 1944. Measuring the error. In:
The pre-election polls of 1948. Report to the Committee on Analysis of Pre-
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Sense and nonsense in psychology(Updated) (Pelican books "A385") by HansJ. Eysenck Paperback, 352 Pages, Published 1970 by Penguin Books Ltd ISBN-13: 978-0-14-020385-1, ISBN: 0-14-020385-0