Hello where can I get this books in pdf Armstrong, M. (2016). *Armstrong’s Handbook of Human Resource Management Practice* (14th Ed.). Kogan Page. - Herzberg, F., Mausner, B., & Snyderman, B. B. (1959). *The Motivation to Work*. John Wiley. - Luthans, F. (2011). *Organizational Behavior* (12th Ed.). McGraw-Hill. - Locke, E. A. (1976). The nature and causes of job satisfaction. In *Handbook of Industrial and Organizational Psychology* (pp. 1297-1343). Rand McNally. - Robbins, S. P., & Judge, T. A. (2017). *Organizational Behavior* (17th Ed.). Pearson Education. - Schermerhorn, J. R., Hunt, J. G., & Osborn, R. N. (2011). *Organizational Behavior* (12th Ed.). Wiley. ---