Betiku, Eriola, et al. “Bioconversion of Breadfruit Starch to Citric Acid by Fungus Aspergillus Niger: A Microbial Fermentation Parameter Optimization Investigation”. BioResources, vol. 21, no. 1, Dec. 2025, pp. 1258-73, https://ojs.bioresources.com/index.php/BRJ/article/view/24713.