Borhan, J. T., and C. Z. Sa’ari. “THE ROLE OF TABUNG HAJI AS A DEPOSIT MOBILIZER OF MUSLIMS IN MALAYSIA, 1969-1990. A HISTORICAL APPROACH”. Journal of Al-Tamaddun, vol. 1, no. 1, Oct. 2017, pp. 215-34, http://ojie.um.edu.my/index.php/JAT/article/view/7887.