Jefriadi. 2022. “Error Analysis towards Scientific Paper’s Abstract Written by the Second Period of Graduation of Social Sciences and Political Students of University of Riau Kepulauan in 2019/2020 Academic Year”. Proceeding of International Conference on Language Pedagogy (ICOLP) 2 (1):152-56. https://proceeding-icolp.fbs.unp.ac.id/index.php/icolp/article/view/83.