N. Al-Gifri, A., W. T. Kasem, and Lamiaa F. Shalabi. “Vegetation Structure and Diversity of Wadi Wasaa, Jazan, Saudi Arabia”. Journal of Advances in Biology & Biotechnology 18, no. 4 (September 10, 2018): 1-16. Accessed June 4, 2020. http://journaljabb.com/index.php/JABB/article/view/5372.