Idahosa, E. O., et al. “Analysis of Economy of Natural Rubber and Shea Nuts in Selected Households in Edo and Oyo States, Nigeria”. Direct Research Journal of Agriculture and Food Science, vol. 12, no. 3, Dec. 2024, pp. 143-8, https://journals.directresearchpublisher.org/index.php/drjafs/article/view/73.