Cita APA (7th ed.)

Foster, D., Walker, A., Paul, J., Griffiths, D., Knox, K., Peto, T., & Crook, D. (2011). Reduction in invasive pneumococcal disease following implementation of the conjugate vaccine in the Oxfordshire region, England.

Cita Chicago (17th ed.)

Foster, D., A. Walker, J. Paul, D. Griffiths, K. Knox, T. Peto, i D. Crook. Reduction in Invasive Pneumococcal Disease Following Implementation of the Conjugate Vaccine in the Oxfordshire Region, England. 2011.

Cita MLA (9th ed.)

Foster, D., et al. Reduction in Invasive Pneumococcal Disease Following Implementation of the Conjugate Vaccine in the Oxfordshire Region, England. 2011.