Saeed, M., M. H. Rasool, F. Rasheed, M. Saqalein, M. A. Nisar, A. A. Imran, S. Tariq, A. Amir, A. Ikram, and M. Khurshid. “Extended-Spectrum Beta-Lactamases Producing Extensively Drug-Resistant Salmonella Typhi in Punjab, Pakistan”. The Journal of Infection in Developing Countries, Vol. 14, no. 02, Feb. 2020, pp. 169-76, doi:10.3855/jidc.12049.