G. Marpaung, F. . Lumbantoruan, R. . Silalahi, B. . Sibarani, E. . Saragih, and P. . Purba, “An Analysis of Reading Comprehension Exercises in the English on Target Textbook for Indonesian Senior High Schools”, JoAL, vol. 5, no. 2, pp. 80–90, Dec. 2025.