MISHRA, BRIJESH K, et al. “Effect of Native Strains of Plant Growth Promoting Rhizobacteria on Growth and Yield of Isabgol (Plantago Ovata)”. The Indian Journal of Agricultural Sciences, vol. 86, no. 10, Oct. 2016, pp. 1280–5, https://doi.org/10.56093/ijas.v86i10.62106.