Stephen Covey Quotes about Perception
Stephen R. Covey (1982). “The Divine Center”, Bookcraft Pubs
Stephen R. Covey (2016). “The 7 Habits of Highly Effective People: Powerful Lessons in Personal Change Interactive Edition”, p.25, Mango Media Inc.
Stephen R. Covey (2016). “The 7 Habits of Highly Effective People: Powerful Lessons in Personal Change Interactive Edition”, p.7, Mango Media Inc.