Nigeria / Lower Benue River Valley

Chicago citation style
Nigeria / Lower Benue River Valley. Retrieved from the Digital Public Library of America, http://ark.cdlib.org/ark:/13030/kt438nb2xz. (Accessed December 12, 2018.)
APA citation style
Nigeria / Lower Benue River Valley. Retrieved from the Digital Public Library of America, http://ark.cdlib.org/ark:/13030/kt438nb2xz
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.cdlib.org/ark:/13030/kt438nb2xz>.
Note: These citations are programmatically generated and may be incomplete.