Dau Thi Hoa. “SOME EXPERIENCE ON INNOVATING TEACHING METHODS GAINED FROM FIVE YEARS OF IMPLEMENTING THE CREDIT SYSTEM IN TRAINING AT THE FACULTY OF GEOGRAPHY–UNIVERSITY OF EDUCATION – DA NANG UNIVERSITY”. UED Journal of Social Sciences, Humanities and Education, Vol. 1, no. 1, Nov. 2011, pp. 102-9, https://jshe.vn/index.php/jshe/article/view/59.