Ryazantsev Sergey Vasilievich (2021) «MIGRANT WORKERS AS A RESOURCE FOR THE DEMOGRAPHIC DEVELOPMENT OF RUSSIA AND THE REPUBLIC OF KAZAKHSTAN», Scientific Journal of Pedagogy and Economics, (2), сс. 204–212. доступно на: http://89.250.84.46/bulletin-science/article/view/221 (просмотрено: 18 декабрь 2025).