APA način citiranja

Spoulou, V., Gilks, C. F., & Ioannidis, J. P. A. (2002). Protein conjugate pneumococcal vaccines: Offer new opportunities for high risk individuals but still lack robust evidence. BMJ.

Čikaški stil citiranja

Spoulou, Vana, Charles F. Gilks, i John P A. Ioannidis. Protein Conjugate Pneumococcal Vaccines: Offer New Opportunities for High Risk Individuals but Still Lack Robust Evidence. BMJ, 2002.

MLA način citiranja

Spoulou, Vana, Charles F. Gilks, i John P A. Ioannidis. Protein Conjugate Pneumococcal Vaccines: Offer New Opportunities for High Risk Individuals but Still Lack Robust Evidence. BMJ, 2002.