Le Diem Bui, Le, Yong Gi Kim, Won Won Ho, Ho Tthi Thu Ho, Trung Tinh Tran, Yen Phuong Hoang, and Bui Le Diem Trang. “The Building OER in Okmindmap for Innovative Teaching and Learning”. International Journal of Engineering & Technology 7, no. 4.9 (October 2, 2018): 26–31. Accessed May 2, 2024. https://sciencepubco.com/index.php/ijet/article/view/20610.