Cita APA (7a ed.)

Hamm, J., & Bujnowski, B. (2017). Unusually excellent: The necessary nine skills required for the practice of great leadership (Unabridged.). Your Coach Digital.

Cita Chicago Style (17a ed.)

Hamm, John, y Brandon Bujnowski. Unusually Excellent: The Necessary Nine Skills Required for the Practice of Great Leadership. Unabridged. Rego Park: Your Coach Digital, 2017.

Cita MLA (8a ed.)

Hamm, John, y Brandon Bujnowski. Unusually Excellent: The Necessary Nine Skills Required for the Practice of Great Leadership. Unabridged. Your Coach Digital, 2017.