N. . Tamba, F. Y. A. . Ginting, and A. S. P. . Sari, “IMPROVING STUDENTS’ VOCABULARY MASTERY THROUGH THE APPLICATION OF WORD WALL STRATEGY TO THE TENTH GRADE STUDENTS OF SMA GKPI PAMEN MEDAN”, KAIROS, vol. 6, no. 1, pp. 47–57, Sep. 2022.