Sipe, J. W., & Frick, D. M. (2015). Seven pillars of servant leadership: Practicing the wisdom of leading by serving. Paulist Press.
Chicago Style (17. basım) AtıfSipe, James W., ve Don M. Frick. Seven Pillars of Servant Leadership: Practicing the Wisdom of Leading by Serving. New York: Paulist Press, 2015.
MLA (9th ed.) AtıfSipe, James W., ve Don M. Frick. Seven Pillars of Servant Leadership: Practicing the Wisdom of Leading by Serving. Paulist Press, 2015.
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