Nainggolan, Erni Susianti. “ANALYSIS OF GRAMMATICAL ERROR ON THE STUDENTS’ WRITING SENTENCES AT THE FIRST SEMESTER OF UNIVERSITAS PAMULANG”. PROCEEDING OF NATIONAL SEMINAR ON LITERATURE, LINGUISTICS AND LANGUAGE TEACHING, vol. 11, Jan. 2022, pp. 128-34, doi:10.32493/.v1i1.17534.