“Suitable Condition of Biodiesel Production from Waste Cooking Oil–Al-Baha City – KSA ”. International Journal of Multidisciplinary and Current Research 3, no. 3 (May 26, 2015): 447–451. Accessed August 25, 2026. https://ijmcr.com/index.php/ijmcr/article/view/03.03.09.