Pensumb?ker
Robert F. DeVellis (2011) Scale Development.Theory and Applications, 3. ED., SAGE Publications, Inc. Series: Applied Social Research Methods Volume 26 Paperback ISBN: 9781412980449
Chapters 1,2,3,4 and 5.
Agresti, Alan (2013) Statistical Methods for the Social Sciences: Pearson New International Edition (4th edition. Edition) ISBN-13: 978-1-292-02166-9
Chapters 4.1-4.4, 8, 9, 10, 11, 13, 14, 15.
Some prior familiarity with the content of chapters 3,5 and 6 is assumed.