Abdullah, M. M., A. B. B. Awang, and N. H. Nor Muhamad. “The Mechanisme of Wisayah In Estate Planning: A Literature Review”. Al-Qanatir: International Journal of Islamic Studies, Vol. 20, no. 1, Sept. 2020, pp. 21-34, http://al-qanatir.com/index.php/aq/article/view/279.