APA Style
Covey, S, R. (1989).
the 7 habits of highly effective people : Pawerful Lessons in Personal Channge .
New York:
Simon and Schuster.
MLA Style
Covey, Stephen, R.
"the 7 habits of highly effective people : Pawerful Lessons in Personal Channge".
New York:
Simon and Schuster,
1989.
Text.