S. A. Abdullah, T. F. M. Salih, A. A. Hama, S. I. Ali, and H. H. Hamaamin, “The Antibacterial Property of Nigella sativa (Black seed) Oil Against Gram-positive and Gramnegative Bacteria”, KJAR, vol. 6, no. 2, pp. 156–165, Jan. 2022, doi: 10.24017/science.2021.2.15.