Klenerman, P., Luzzi, G., & Peto, T. (1993). Pneumococcal disease and HIV infection.
Lua i Stíl Chicago (17ú heag.)Klenerman, P., G. Luzzi, agus T. Peto. Pneumococcal Disease and HIV Infection. 1993.
Lua MLA (9ú heag.)Klenerman, P., et al. Pneumococcal Disease and HIV Infection. 1993.
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