Taiwo Ejiola, Mafimisebi, and Okunmadewa Foluso Yinka. “Comparative Cost Structure and Yield Performance Anzlysis of Upland and Mangrove Fish Farms in Southwest, Nigeria”. International Journal of Agricultural Management and Development, vol. 2, no. 4, Sept. 2012, pp. 187-98, https://oiccpress.com/ijamad/article/view/6668.