Khattak, M. A. ., N. S. . Mohd Yasin, H. N. . Andjani, P. N. H. . Mohd Tajuddin, . S. . Narajah, S. . Zhi Fei, S. . Ann Ting, and S. . Kazi. “Global Energy Security and North America: A Review”. Journal of Advanced Research in Applied Sciences and Engineering Technology, vol. 11, no. 1, Dec. 2020, pp. 82-98, https://akademiabaru.com/submit/index.php/araset/article/view/1962.