Syaifudin , Fuad. “The Effectiveness of Using The Goat’s Secret; Illustrated English Short Stories to Improve Grammar Ability of The Second Grade of SMPN 20 Purworejo in The Academic Year of 2015/2016”. Scripta : English Department Journal 6, no. 2 (August 31, 2019): 7-11. Accessed April 29, 2025. https://ebook.umpwr.ac.id/scripta/article/view/717.