Elena Burdina, Aiman Nurzhumbayeva, Sanim Kozhayeva, y Zhanna Temerbayeva, Leonid Bulyga. «Diagnostics Of Pedagogical Staff Readiness For Teaching Natural Sciences In English». Opción 35, no. 88 (junio 11, 2019): 321-345. Accedido agosto 3, 2025. http://www.produccioncientifica.luz.edu.ve/index.php/opcion/article/view/24207.