Ulfa, Ulfa, Wiyaka Wiyaka, and Sri Wahyuni. “Improving Student’s Vocabulary Mastery Through Hello English Application at Tenth-Grade Students of High School”. Lingua Franca 2, no. 2 (August 4, 2023): 12–26. Accessed October 30, 2025. https://ejournal.insuriponorogo.ac.id/index.php/lingua_franca/article/view/2465.