Journal Article
Anyiro, Chidozie Onyedikachi, Christopher Ogbonna Emerole, Charles Kelechi Osondu, Solomon Chinyere Udah, and Silas Ebuka Ugorji.
"Labour-Use Efficiency By Smallholder Yam Farmers In Abia State Nigeria: A Labour-Use Requirement Frontier Approach." International Journal of Food and Agricultural Economics 1, no. 1 (2013): 151-163.