Aquisman,A E , , Wee,B S , , Chin,S F , , Kwabena,D E , , Michael,K O , , Bakeh,T , , Semawi,S , and Sylvester,D S . "Synthesis, Characterization, and Antibacterial Activity of ZnO Nanoparticles from Organic Extract of Cola Nitida and Cola Acuminata Leaf", International Journal of Nanoscience and Nanotechnology, 16, 2, 2020, 73-89.