Siti Feliscka Azelia Putri, Siminto S, Qamariah Z. The The Development of a Vocabulary Module Using Flip PDF Corporate Software at Secondary School. DEJ [Internet]. 2024 Dec. 15 [cited 2026 Apr. 26];4(2):120-49. Available from: https://ejournal.iaida.ac.id/index.php/dej/article/view/3335