Hale, Thomas L.; Keusch, Gerald T. (1996), Baron, Samuel (ed.), "Shigella", Medical Microbiology (4th ed.), Galveston (TX): University of Texas Medical Branch at Galveston, ISBN978-0-9631172-1-2, PMID21413292, retrieved 2021-03-08
ncbi.nlm.nih.gov
Hale, Thomas L.; Keusch, Gerald T. (1996), Baron, Samuel (ed.), "Shigella", Medical Microbiology (4th ed.), Galveston (TX): University of Texas Medical Branch at Galveston, ISBN978-0-9631172-1-2, PMID21413292, retrieved 2021-03-08