Aamur, Ghulam Rasool, et al. “Effect of Macronutrient Levels on Growth and Development of Spinach (Spinacia Oleracea L.)”. Integrative Plant Biotechnology, vol. 3, no. 3, Sept. 2025, pp. 231-9, https://doi.org/10.55627/pbiotech.003.03.1453.