Khan, Ashiq, et al. “Applications of Beneficial Plant Growth Promoting Rhizobacteria and Mycorrhizae in Rhizosphere and Plant Growth: A Review”. International Journal of Agricultural and Biological Engineering, vol. 13, no. 5, Oct. 2020, pp. 199-08, https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/5762.