Mumtaz, A. A., and A.-D. Sultan. “LITERATURE ON TERRORISM: A BIBLIOMETRIC ANALYSIS OF ARTICLES PUBLISHED DURING 1981-1990”. Malaysian Journal of Library and Information Science, vol. 16, no. 2, May 2017, pp. 33-43, https://jice.um.edu.my/index.php/MJLIS/article/view/6696.