Nurtina, N., and J. Sapri. “APPLICATION OF ROLE PLAYING LEARNING METHODS TO IMPROVE SELF-CONFIDENCE AND SPEAKING SKILLS (Study in English Lessons for Class XI SMAN 1 Students West Merapi)”. Diadik: Jurnal Ilmiah Teknologi Pendidikan, vol. 9, no. 2, Aug. 2021, pp. 114-21, doi:10.33369/diadik.v9i2.17450.