Solihah, Mufidatus, Tyas Alhim Mubarok, and Ahmad Saifudin. 2023. “Development of a Simple English Book to Improve Vocabulary Mastery for X-1 Grade Students at SMAS Raudlatul Ulum Gondanglegi”. Journey: Journal of English Language and Pedagogy 6 (2), 308-16. https://doi.org/10.33503/journey.v6i2.2883.