Omonona, B. T., Lawal, J. O. and Oyebiyi, I. D. (2012) “Profitability of production and resource-use efficiency among ofada rice (Oryza sativa japonica) farmers in Southwest, Nigeria”, Comunicata Scientiae, 3(2), pp. 104–107. doi: 10.14295/cs.v3i2.125.