M. Valdez, Christian Jay, Princess Lou G. Cardenas, Alpha Y. Aurelio, Mark Andrei G. Adisas, and Louie Villanueva. “Authentic Text-Based Activities to Enhance Students’ Ability in Using Perfect Verb Tenses”. ETERNAL (English, Teaching, Learning, and Research Journal) 9, no. 02 (December 30, 2023): 326-345. Accessed September 19, 2024. https://journal3.uin-alauddin.ac.id/index.php/Eternal/article/view/39282.