PMC 3226630 . PMID 22078162. doi:10.1186/1471-2334-11-314. Prevention of pneumococcalpneumonia by immunization with specific capsular polysaccharides. J Exp Med
(原始内容存档于2021-12-03) (中文(简体)). Peterson LR. Penicillins for treatment of pneumococcalpneumonia: does in vitro resistance really matter?. Clin Infect Dis. 2006