Revola, Yashori, Alamsyah Harahap, and Bambang Suwarno. 2018. “THE ANALYSIS OF SIGNIFICANCE DIFFERENCE IN WRITING ACHIEVEMENT AMONG THE STUDENTS WHO ARE INTROVERT, EXTROVERT, AND AMBIVERT”. JOALL (Journal of Applied Linguistics and Literature) 1 (1):84-96. https://doi.org/10.33369/joall.v1i1.3939.