MALIK, R K, et al. “Effect of Azotobacter Chroococcum Inoculation on Yield and Yield Attributes of Egyptian Cotton (Gossypium Barbadense)”. The Indian Journal of Agricultural Sciences, vol. 64, no. 8, Apr. 2013, https://epubs.icar.org.in/index.php/IJAgS/article/view/29407.