Ganjbakhsh, Hamed, Arham Bin Abdullah, Mohammadali Kazerooni Sadi, and Mohammadreza Yadollahi. 2015. “Effective Training Factors for Competency of Demolition Operatives in Malaysia”. International Journal of Economics and Financial Issues 5 (1S):238-41. https://econjournals.com/index.php/ijefi/article/view/1389.