“Selecting Physical Exercises on Precor Machine to Develop Delta Muscle Group for First-Year Specialized Students of Gymnastics, Hanoi University of Sports and Physical Education”. Tạp chí khoa học Đào tạo và Huấn luyện Thể thao 1, no. Đặc biệt (December 12, 2019): 544. Accessed October 16, 2024. http://tckhupes1.edu.vn/index.php/upes1/article/view/1856.