Hidayati, Ratri Nur, and Andhika Nur Machmuda. “The Effectiveness of Using Whatsapp Group to Improve Grammar Ability in Report Text of the Tenth Grade Students at SMA N 1 Prambanan in the Academic Year of 2019 2020”. Journal of English Language Teaching and English Linguistics 7, no. 1 (January 29, 2022). Accessed April 23, 2026. https://journal.upy.ac.id/index.php/eltics/article/view/2221.