https://ult.fmipa.uho.ac.id/wp-content/upgrade/
Elkef م. “نهر الكفرة الجوفي حقيقته واهميته العلمية والاقتصادية”. Journal of Humanitarian and Applied Sciences, vol. 1, no. 2, Dec. 2016, pp. 42-58, https://khsj.elmergib.edu.ly/index.php/jhas/article/view/19.