Kaur, Pawandeep, et al. “Response of Different Levels of Nitrogen and Spacing on Growth and Yield of Cauliflower Grown under Central Region of Punjab”. International Journal of Bio-Resource and Stress Management, vol. 11, no. Aug, 4, July 2020, pp. 320-6, http://ojs.pphouse.org/index.php/IJBSM/article/view/4022.