Cita APA (7a ed.)

Frick, D. M. (2004). Robert K. Greenleaf: A life of servant leadership. Berrett-Koehler Publishers.

Cita Chicago Style (17a ed.)

Frick, Don M. Robert K. Greenleaf: A Life of Servant Leadership. San Francisco, Calif.: Berrett-Koehler Publishers, 2004.

Cita MLA (9a ed.)

Frick, Don M. Robert K. Greenleaf: A Life of Servant Leadership. Berrett-Koehler Publishers, 2004.