Gamal, Awadh Ahmed Mohammed, Sultan Ali Mohammed Salem, Joseph David, Gan Pei Tha, and K Kuperan Viswanathan. “Investigating the Effect of the Shadow Economy on Malaysia’s Economic Growth: Insight from a Nonlinear Perspective”. Asian Economic and Financial Review 15, no. 2 (January 28, 2025): 182–195. Accessed June 7, 2025. https://archive.aessweb.com/index.php/5002/article/view/5290.