Dr Ralf-Peter Vonberg. „Clostridium difficile: a challenge for hospitals”. European Center for Disease Prevention and Control. Institute for Medical Microbiology and Hospital Epidemiology: IHE. Arhivirano iz originala na datum 2009-06-11. Pristupljeno 27. 7. 2009.
nih.gov
ncbi.nlm.nih.gov
Ivanov DV, Budanov SV (2006). „[Ciprofloxacin and antibacterial therapy of respiratory tract infections]” (Russian). Antibiot. Khimioter.51 (5): 29–37. PMID17310788.
Dr Ralf-Peter Vonberg. „Clostridium difficile: a challenge for hospitals”. European Center for Disease Prevention and Control. Institute for Medical Microbiology and Hospital Epidemiology: IHE. Arhivirano iz originala na datum 2009-06-11. Pristupljeno 27. 7. 2009.