ZAYNOBIDDINOVA, M. A. qizi; SATIVALDIYEV, A. K. Halol sertifikatlash jarayoni: muammolar va ba’zi yechimlar. Science and Education, [S. l.], v. 4, n. 3, p. 204–211, 2023. Disponível em: https://openscience.uz/index.php/sciedu/article/view/5337. Acesso em: 27 sep. 2024.