Kussainov, A., Kudysheva, B., Gulsara Kalieva, A. R., Duanabaeva, B., Jakubakynov, B. and Jumanova, G. (2019) “The ‘Self-knowledge’ program as the basis of the education system of the school”, Opción, 35(90-2), pp. 541-555. Available at: https://mail.produccioncientificaluz.org/index.php/opcion/article/view/30594 (Accessed: 9June2025).