Bui, Hung Phu, Huan Hung Phuong Bui, and Phat Dac Dinh. 2023. “Vietnamese Students’ Use of Smartphone Apps in English Learning”. LEARN Journal: Language Education and Acquisition Research Network 16 (1):28-46. https://so04.tci-thaijo.org/index.php/LEARN/article/view/263430.