Nguyen, K. Q., Q. N. Vo, and L. T. T. To. “An Exploratory Comparison of the THPT English Exam and an IELTS Benchmark: A Question of Equivalence”. TTU Journal of Science, vol. 1, no. 2, June 2026, pp. 71-77, doi:10.53901/tjs.2026.v01.issue02.art08.