Nguyen Thi Hong Tham, “CURRENT STATUS OF DIFFERENTIATED INSTRUCTION COMPETENCY AMONG PRE-SERVICE FINE ARTS TEACHERS AT SELECTED UNIVERSITIES: A SELF-ASSESSMENT STUDY”, HNUE JoES, vol. 71, no. 6, pp. 86–95, Oct. 2026, doi: 10.18173/2354-1075.2026-%x.