A. E. U. Limbong, V. Lumban Raja, and A. S. P. Sari, “THE CORRELATION BETWEEN THE STUDENTS’ VOCABULARY MASTERY AND THEIR WRITING SKILL OF THE TENTH GRADE STUDENTS OF SMA NEGERI 1 KERAJAAN IN THE ACADEMIC YEAR OF 2020/2021”, KAIROS, vol. 4, no. 2, pp. 106–125, Mar. 2021.