Limbong, Eli Rosiani, Sara Yusdika Saragih, and Raphael Sugara. “Grammatical Errors In Predicate Verb Usage In Efl Writing: A Systematic Literature Review”. JURNAL MANAJEMEN PENDIDIKAN 14, no. 02 (July 31, 2026): 1516–1522. Accessed August 7, 2026. https://jmp-pasca.unpak.ac.id/index.php/JMP/article/view/162.