Widianingsih, B., L. Syafirullah, X. Guilin, D. Jiao, and Y. Wang. “The Effectiveness of Repetition Drill Technique To Improve Electrical Engineering Student’s Speaking Skill”. Journal International of Lingua and Technology, vol. 2, no. 3, Sept. 2023, pp. 243-59, doi:10.55849/jiltech.v2i3.432.