APA

Greenleaf R. K., Spears L. C., Covey S. R. & Senge P. M. (2002). Servant leadership. New York: Paulist Press.

Chicago

Greenleaf Robert K, Spears Larry C, Covey Stephen R and Senge Peter M. 2002. Servant leadership. New York: Paulist Press.

Harvard

Greenleaf R. K., Spears L. C., Covey S. R. and Senge P. M. (2002). Servant leadership. New York: Paulist Press.

MLA

Greenleaf Robert K, Spears Larry C, Covey Stephen R and Senge Peter M. Servant leadership. New York: Paulist Press. 2002.