Ahmad, Mushtaq, Muhammad Zafar, Mir Ajab Khan, Aurangzeb Hasan, and Shazia Sultana. 2010. “Methanolysis of Cottonseed Oil for Biodiesel: As Renewable Source of Energy”. Asian Journal of Chemistry 20 (6):4565-70. https://asianpubs.org/index.php/ajchem/article/view/19064.