Purnawati P. The Implication of Teachers’ Question and Feedback to the Students Vocabulary Production: an Analysis of Spoken Discourse of EFL Classrooms using IRF Model. Foremost [Internet]. 2021Aug.31 [cited 2024Apr.27];2(2):8-15. Available from: https://ejournal.unis.ac.id/index.php/Foremost/article/view/1738