T. L. K. Nguyen and T. M. H. Tran, “RECTIFYING VIETNAMESE SPELLING ERRORS AMONG GRADE 1 STUDENTS IN ENGLISH – VIETNAMESE BILINGUAL SCHOOLS: AN EXPERIMENTAL RESEARCH”, TCKH ĐHSP TPHCM TPHCM, vol. 23, no. 4, pp. 801–812, Apr. 2026.