1. Antonakis, J., Avolio, B., & Sivasubramaniam, N. (2003). Context and leadership: An examination of the nine- factor full-range leadership theory using the Multifactor Leadership Questionnaire. The Leadership Quarterly, 14, 261-295. Doi: 10.1016/S1048-9843(03)00030-4.
2. Avolio, B., Bass, B., & Jung, D. (1995). Construct validation and norms for the Multifactor Leadership Questionnaire (MLQ-Form 5X) (CLS Rep. No. 95-4). Binghamton: State University of New York, Centre for Leadership Studies.
3. Los Cinco Grandes across cultures and ethnic groups: Multitrait multimethod analyses of the Big Five in Spanish and English;Benet-Martinez;Journal of Personality and Social Psychology,1998
4. Bolkan, S., & Goodboy, A. (2009). Transformational leadership in the classroom: Fostering student learning, student participation, and teacher credibility. Journal of Instructional Psychology, 36(4), 296-306. Retrieved from http://www.projectinnovation.biz/jip.html.
5. Bowman, R. (2004). Teachers as leaders. Clearing House, 77(5), 187. Retrieved from http://www.tandf.co.uk/journals/titles/00098655.asp.