American Psychological Association
Covey, Stephen R ( 1999 ). 7 Habits of Highly Effective People Restoring the Character Ethic ( 00 ed. ). Gale Cengage Learning.
Modern Language Association
Covey, Stephen R. 7 Habits of Highly Effective People Restoring the Character Ethic . Gale Cengage Learning. 1999
Chicago Citation
Covey, Stephen R. 7 Habits of Highly Effective People Restoring the Character Ethic . 00 .Detroit
: Gale Cengage Learning, 1999.
American Medical Association
Covey, Stephen R. 7 Habits of Highly Effective People Restoring the Character Ethic . Gale Cengage Learning; 1999.
