Yulianingsih, Diah Rahmi. “EFL Teachers’ Perception on the Implementation of Collaborative Writing Hortatory Exposition Text for Eleventh Graders”. RETAIN : Journal of Research in English Language Teaching, vol. 10, no. 01, July 2022, pp. 109-18, https://ejournal.unesa.ac.id/index.php/retain/article/view/46726.