Authors: Millicent Sedi, Adebayo Akinboye Akinola, Caleb O. Obunyali, Moses Adeolu Adebayo, George Marechera, Dean Muungani, Itai Mazambani, Sylvester O. Oikeh.
Authors: Benton F. Allen, Emily M. Hunt, John T. Richeson, Paige Dodge, Robert Miersma.