SUNIL KUMAR, et al. “Productivity, Profitability and Quality of Indian Mustard (Brassica Juncea) As Influenced by Fertilizer Levels and Integrated Nutrient-Management”. Indian Journal of Agronomy, vol. 61, no. 2, Oct. 2001, pp. 231-6, https://doi.org/10.59797/ija.v61i2.4353.