Ayamah, Richard, and K. F. Darkwah. “Factorial Design and Model for the Effect of National Road Safety Strategy Two (NRSS II)”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 20, no. 1 (January 31, 2015): 192–207. Accessed May 20, 2024. https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/3183.