Cita APA

Covey,Stephen R. (2007). Seven Habits of Highly Effective People (4.). D C Books.

Chicago Edition Citation

Covey,Stephen R. Seven Habits of Highly Effective People. 4. Kottayam: D C Books, 2007.

Cita MLA

Covey,Stephen R. Seven Habits of Highly Effective People. 4. D C Books, 2007.