“The Criterion Level of Readability in Teaching Tutorials: Twelfth Grade Economic Book As a Sample”. Raparin Journal of Humanities (RJH) of the University of Raparin 10, no. 2 (June 29, 2023): 291–317. Accessed December 20, 2025. https://journal.raparinuni2024.org/index.php/JUR/article/view/1023.