Astrinia Ristama Tampubolon, Basar Lolo Siahaan, and Anita Sitanggang, “The Effect Of Using Tiktok On Students’ Vocabulary Mastery In Seventh Grade At SMP Negeri 9 Pematang Siantar ”, JIPSI, vol. 2, no. 3, pp. 390–402, Oct. 2023.