Siahaan, Entika Cintami, et al. “The Effect Of Tongue Twister Video On The Students’ Speaking Ability Of Tenth Grade At Taman Madya (SMA) Tamansiswa Pematangsiantar”. Innovative: Journal Of Social Science Research, vol. 4, no. 5, Oct. 2024, pp. 9138-4, doi:10.31004/innovative.v4i5.15966.