1. Aliakbari, M., & Sadeghi, A. (2014). Iranian teachers’ perceptions of teacher leadership practices in schools. Educational Management Administration & Leadership, 42(4), 576–592. https://doi.org/10.1177/1741143213510500.
2. Ash, R. C., & Persall, J. M. (2000). The principal as chief learning officer: Developing teacher leaders. NASSP Bulletin, 84(616), 15–22. Retrieved from http://bul.sagepub.com/content/84/616/15.full.pdf+html.
3. Atkins, L., & Wallace, S. (2012). Research methods in education: Qualitative research in education. London: Sage. Retrieved from http://ezproxy.library.nu.edu.kz:2154/10.4135/9781473957602.
4. Babbie, E. (2013). The practice of social research (International ed.). Wadsworth: Cengage Learning.
5. Baumgartner, A. (2000). Teachers as leaders: Note from a leader who never planned become one. NASSP Bulletin, 84(616), 23–26. Retrieved from http://bul.sagepub.com/content/84/616/23.full.pdf+html.