APA (7. basım) Alıntı
Covey, S. Tearing down walls: Covey leadership 5. Covey Leadership library.
Chicago Style (17. basım) Atıf
Covey, Stephen. Tearing Down Walls: Covey Leadership 5. Covey Leadership library.
MLA (9th ed.) Atıf
Covey, Stephen. Tearing Down Walls: Covey Leadership 5. Covey Leadership library.
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