Wulyani, A. N., U. Widiati, and N. E. Khoiri. “Challenges in Implementing Extensive Reading (ER) Programs: Voices from English Teachers at Indonesian Secondary Schools”. Pegem Journal of Education and Instruction, vol. 12, no. 1, Jan. 2022, pp. 74-83, doi:10.47750/pegegog.12.01.08.