Shube, Bekele Daba, and Alemu Hailu Hanshu. “Teachers’ Knowledge: Teachers’ Perceptions and Their Sources of Knowledge in Vocabulary Instruction”. English Language Teaching Educational Journal 5, no. 3 (May 14, 2023): 191–201. Accessed July 3, 2024. https://journal2.uad.ac.id/index.php/eltej/article/view/6879.