N. T. Tu Trinh, P. Van Hoa, and T. Huu Phuc, “Circumstantial meanings in behavioral clauses in English and Vietnamese”, TCKHXHNV, vol. 3, no. 5, pp. 632–646, Oct. 2025, Accessed: Feb. 15, 2026. [Online]. Available: https://jossh.ussh.edu.vn/index.php/JOSSH-VN/article/view/361