A. U. Ofuoku, B. O. Peter Opia, y E. . Aramide Ikpoza, «Impact of COVID-19-induced rural-rural migration on agricultural productivity in Delta State, Nigeria», Sci. agropecu, vol. 12, n.º 1, pp. 49–55, feb. 2021, doi: 10.17268/sci.agropecu.2021.006.