Jalal, M. F. A. ., S. S. A. . Fadhil, and H. . Hasini. “Students, Assessment Through Open-Book Concept for Final Exam”. International Journal of Asian Social Science, vol. 4, no. 2, Feb. 2014, pp. 217-25, https://archive.aessweb.com/index.php/5007/article/view/2623.