Adesola Adebola Ikudayisi. “Integration Among Spatial Onion Markets in Nigeria- A Cointegration Analysis”. Global Journal of Human-Social Science 15, no. E3 (March 15, 2015): 59–68. Accessed May 6, 2024. https://socialscienceresearch.org/index.php/GJHSS/article/view/1421.