Cite
Effects of a large-scale intervention with influenza and 23-valent pneumococcal vaccines in adults aged 65 years or older: a prospective study.
MLA
Christenson, B., et al. “Effects of a Large-Scale Intervention with Influenza and 23-Valent Pneumococcal Vaccines in Adults Aged 65 Years or Older: A Prospective Study.” Lancet (London, England), vol. 357, no. 9261, Mar. 2001, pp. 1008–11. EBSCOhost, https://doi.org/10.1016/S0140-6736(00)04237-9.
APA
Christenson, B., Lundbergh, P., Hedlund, J., & Ortqvist, A. (2001). Effects of a large-scale intervention with influenza and 23-valent pneumococcal vaccines in adults aged 65 years or older: a prospective study. Lancet (London, England), 357(9261), 1008–1011. https://doi.org/10.1016/S0140-6736(00)04237-9
Chicago
Christenson, B, P Lundbergh, J Hedlund, and A Ortqvist. 2001. “Effects of a Large-Scale Intervention with Influenza and 23-Valent Pneumococcal Vaccines in Adults Aged 65 Years or Older: A Prospective Study.” Lancet (London, England) 357 (9261): 1008–11. doi:10.1016/S0140-6736(00)04237-9.