Gaya APA
R.Covey, S.
(2013).
The WISDOM and TEACHINGS of STEPHEN R.COVEY
.
Jakarta:
PT Dunamis Intra Sarana.
Gaya MLA
R.Covey, Stephen.
"The WISDOM and TEACHINGS of STEPHEN R.COVEY".
Jakarta:
PT Dunamis Intra Sarana,
2013.
Text Book Manajemen.