References
[i] http://www.infosurv.com/real-impact-disengaged-employees/
[iv] https://blog.deming.org/2012/10/appreciation-for-a-system/
[v] http://www.selfgrowth.com/articles/our_egos_deepest_need_appreciation.html
[vii] https://dictionary.cambridge.org/dictionary/english/yes-man
[viii] https://leaderonomics.com/business/lose-yes-men
[ix] https://www.slideshare.net/dhiraj2hrd/bell-curve-appraisal