EVA BETTY SIMANJUNTAK; AMANDA DANIELA NAIBAHO; CITRA SUCI RAMADANI; FITRI SIBARANI; RAHMA PUSPITA; RATIKA RAHMI; MICHAEL SITORUS. Analysis of Elementary School Students’ Difficulties in Mastering Basic English Sentence Structure: on To Be, Verbs, Adverbs, Nouns, Subject Pronouns and Possessive Adjectives: Penelitian. Jurnal Pengabdian Masyarakat dan Riset Pendidikan, [S. l.], v. 3, n. 4, p. 4028–4031, 2025. Disponível em: http://jerkin.org/index.php/jerkin/article/view/988. Acesso em: 7 nov. 2025.