Asaolu, M F. 2003. “CHEM ICAL COMPOSITIONS AND PHYTOCHEM ICAL SCREENING OF THE SEEDS OF GARC/NIA KOLA (BITTER KOLA)”. Biological Sciences - PJSIR 46 (3):145-47. https://v2.pjsir.org/index.php/biological-sciences/article/view/1613.