APA Style
COVEY, Stephen R.. (2004).
The seven habits of highly effective people .
:
.
Chicago Style
COVEY, Stephen R..
The seven habits of highly effective people.
:
,
2004.
Text.
MLA Style
COVEY, Stephen R..
The seven habits of highly effective people.
:
,
2004.
Text.
Turabian Style
COVEY, Stephen R..
The seven habits of highly effective people.
:
,
2004.
Print.