Shoshanov Saken Bakhytzhanovich, Makhanov Sagat Sultanbekovich, Salykova Leila Nurtleuovna и Petr Hajek (2021) «ORGANIZATION OF REFINED PRODUCTS SALES IN KAZAKHSTAN », Scientific Journal of Pedagogy and Economics, (1), сс. 194–201. доступно на: https://journals.nauka-nanrk.kz/bulletin-science/article/view/383 (просмотрено: 5 декабрь 2025).