Ismail, Abd Ghafar, Masturah Ma’in, and Nizam Ahmat. 2011. “The Impact of Leverage on Investment: Evidence from Shariah Listed Firms”. The Journal of Muamalat and Islamic Finance Research 8 (1):105-20. https://jmifr.usim.edu.my/index.php/jmifr/article/view/134.