TRIA SAUHANA, F. . “THE EFFECT OF USING FOUR-SQUARE WRITING METHOD ON STUDENTS’ WRITING ABILITY AND VOCABULARY MASTERY AT SMK NURUL FALAH PEKANBARU”. EJI (English Journal of Indragiri) : Studies in Education, Literature, and Linguistics, vol. 5, no. 1, Jan. 2021, pp. 15-27, doi:10.32520/eji.v5i1.1292.