Sulaiman, K. H., Al-Barakah, F. N., Assafed, A. M. and Dar, B. A. M. (2019) “Isolation and identification of Azospirillum and Azotobacter species from Acacia spp. at Riyadh, Saudi Arabia”, Bangladesh Journal of Botany, 48(2), pp. 239–251. doi: 10.3329/bjb.v48i2.47546.