Singh, Manoj Kumar, et al. “Response of Different Doses of NPK and Boron on Growth and Yield of Broccoli (Brassica Oleracea L. Var. Italica)”. International Journal of Bio-Resource and Stress Management, vol. 6, no. Feb, 1, May 2023, pp. 108-12, https://ojs.pphouse.org/index.php/IJBSM/article/view/655.