A. J. Sianturi, N. Sembiring, and F. Y. A. Ginting, “ERROR ANALYSIS ON PRONOUN MADE BY THE ELEVENTH GRADE STUDENTS OF SMA KATOLIK CINTA KASIH TEBING TINGGI IN ACADEMIC YEAR OF 2020/2021”, KAIROS, vol. 4, no. 2, pp. 80–91, Mar. 2021.