Sahu, Mamta, et al. “Availability of Macronutrients & Sulphur and Their Relationship With Physico-Chemical Properties in Lateritic Soils of Birbhum District, West Bengal”. International Journal of Economic Plants, vol. 9, no. Aug, 3, Aug. 2022, pp. 260-3, https://ojs.pphouse.org/index.php/IJEP/article/view/4749.