Usman, Abdullahi, Adams Udoji Itodo, Nasiru Liman Usman, and Maryam Haruna. 2016. “Fatty Acid Methyl Esters Composition of Trichilia Emetica Shell Oil”. American Scientific Research Journal for Engineering, Technology, and Sciences 21 (1):83-90. https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/1739.