Waruwu, A., A. T. Harefa, K. M. E. Telaumbanua, and E. P. Zebua. “Determining students’ Speaking Skill Based on Guessing Game at the Eighth Grade of SMP Negeri 2 Lolofitu Moi”. Cendikia : Media Jurnal Ilmiah Pendidikan, vol. 16, no. 2, Nov. 2025, pp. 105-14, doi:10.35335/cendikia.v16i2.6813.