Kolesnik, Elena Andreevna, y Vladimir Gennadievich Stepanov. «Labor Potential of Engineering Personnel in the Russian Oil and Gas Region: Problems of Development in the System of Secondary Professional Education». Amazonia Investiga 9, no. 27 (marzo 21, 2020): 140–148. Accedido noviembre 25, 2025. https://amazoniainvestiga.info/index.php/amazonia/article/view/1204.