Головньова, І. В., and О. В. Милославська. “KEY COMPETENCIES OF A LEADER: EVALUATION AND DEVELOPMENT TRENDS”. The Journal of V. N. Karazin Kharkiv National University. A Series of «Psychology», no. 62, Oct. 2017, pp. 12-17, https://periodicals.karazin.ua/psychology/article/view/9404.