Phan, Thi Thuy. “TYPES OF RESPONSE UTTERANCES TO INVITATION SPEECH ACTS IN THE VIETNAMESE LANGUAGE”. Dalat University Journal of Science 12, no. 1 (January 28, 2022): 154–177. Accessed May 28, 2024. https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/772.