Сакауова, У.Ж.; Демидова, Л.В.; Морковник, Н.В.; Поколодина, К.С.(Publisher of Kostanay Regional University named after Akhmet Baitursynov, 2021-02-19)
Жүргімбаева, А.А.; Қараулова, Қ.М.; Нұрахметова, А.Б.; Төретаева, Ж.С.(Publisher of Kostanay Regional University named after Akhmet Baitursynov, 2021-02-19)