1. Beck , J. 1978 Leadership education: A field test of Hersey and Blanchard's situational leadership theory . Unpublished doctoral dissertation, University of Massachusetts
2. Clothier , R. 1984 An investigation of the applicability of the Hersey and Blancard situational leadership theory in institutions of higher education . Unpublished doctoral dissertation, University of Northern Colorado
3. Managerial talent;Ghiselli;American Psychologist,1963