Tsamratul’aeni, T. “Investigating Code Switching Used by English Teachers at SMPN 3 Pitumpanua”. DEIKTIS: Jurnal Pendidikan, Bahasa Dan Sastra, Vol. 5, no. 1, Feb. 2025, pp. 178-95, https://www.dmi-journals.org/deiktis/article/view/1369.