Ibrahim, Khalid A., et al. “Response of Growth, Yield and Seed Quality of Guar (Cyamopsis Teteragonolopa L.) to Bradyrhizobium Inoculations”. Pakistan Journal of Nutrition, vol. 10, no. 9, Aug. 2011, pp. 805–813, https://doi.org/10.3923/pjn.2011.805.813.