Cita APA (7a ed.)
Covey, S. Tearing down walls: Covey leadership 5. Covey Leadership library.
Cita Chicago Style (17a ed.)
Covey, Stephen. Tearing Down Walls: Covey Leadership 5. Covey Leadership library.
Cita MLA (9a ed.)
Covey, Stephen. Tearing Down Walls: Covey Leadership 5. Covey Leadership library.
Precaución: Estas citas no son 100% exactas.