Operating Regulation of Control Board 16.4.2021
https://file.hstatic.net/1000223142/file/cbtt-_bau_truong_ban_kiem_soat_va_quy_che_hoat_dong_cua_bks_5553f4c00f9a4af1b2ebc443671d5003.pdf
https://file.hstatic.net/1000223142/file/cbtt-_bau_truong_ban_kiem_soat_va_quy_che_hoat_dong_cua_bks_5553f4c00f9a4af1b2ebc443671d5003.pdf