J. P. Verma and Abdel–Salam G Abdel–Salam, "Testing Statistical Assumptions in Research" English | ISBN: 1119528410 | 2019 | 224 pages | PDF | 8 MB
Introduction to Mediation, Moderation, and Conditional Process Analysis : A Regression-Based Approach, Second Edition by Andrew F. Hayes English | 2018 | ISBN: 1462534651 | 713 Pages | PDF | 2.94 MB