Dogo, Sunday, et al. “Soil Organic Carbon Stock Variations Across Depth and Land Use Types in the Sudano-Sahelian Zone, Gashua, Nigeria”. African Journal of Agricultural Science and Food Research, vol. 21, no. 1, Feb. 2026, pp. 264-75, https://doi.org/10.62154/ajasfr.2025.021.01026.