Bahrudin, Dinar Vincy Yunitaka. “The Effect of Textbook Readability on Students’ Reading Comprehension”. Wacana Didaktika 4, no. 1 (June 30, 2016): 42–54. Accessed January 25, 2026. http://journal.uim.ac.id/index.php/wacanadidaktika/article/view/62.