Stephen Richards Covey was the author of the non-fiction books including the best-seller, "The Seven Habits of Highly Effective People". He was also a professor at the Jon M. Huntsman School of Business at Utah State University.
Stephen R. Covey
Autorearen xehetasunak
- Jaiotza:
- 1932ko urr. 24a
- Heriotza:
- 2012ko uzt. 16a
