Lyudmila D. Zheldochenko, Svetlana V. Zholudeva, A. M. S. M. V. N. I. A. P. E. I. R. «Career Orientations and Motivation of Top and Middle-Level Managers». Opción, Vol. 35, agosto de 2019, pp. 1590-07, https://produccioncientificaluz.org/index.php/opcion/article/view/24799.