Cita APA (7a ed.)
Covey, S. R. The Seven Habits of Highly Effective People: Restoring the Character Ethic. Fireside.
Cita estilo Chicago (17a ed.)
Covey, Stephen R. The Seven Habits of Highly Effective People: Restoring the Character Ethic. Nueva York, EUA: Fireside.
Cita MLA (9a ed.)
Covey, Stephen R. The Seven Habits of Highly Effective People: Restoring the Character Ethic. Fireside.
Precaución: Estas citas no son 100% exactas.