KAYODE. O. OMOTADE, PHD; ADEOLA OLUWAFEMI, PHD. Russian Language Acquisition Challenge among Learners in Nigeria. Journal of Innovative Social Science and Humanities Research, Nigeria, v. 2, n. 2, 2023. Disponível em: https://hummingbirdjournals.com/jisshr/article/view/92.. Acesso em: 5 oct. 2025.