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Lua i Stíl Chicago (17ú heag.)Ndiritu, M., K. Cowgill, A. Ismail, S. Chiphatsi, T. Kamau, G. Fegan, DR Feikin, C. Newton, agus J. Scott. Immunization Coverage and Risk Factors for Failure to Immunize Within the Expanded Programme on Immunization in Kenya After Introduction of New Haemophilus Influenzae Type B and Hepatitis B Virus Antigens. BioMed Central, 2006.
Lua MLA (9ú heag.)Ndiritu, M., et al. Immunization Coverage and Risk Factors for Failure to Immunize Within the Expanded Programme on Immunization in Kenya After Introduction of New Haemophilus Influenzae Type B and Hepatitis B Virus Antigens. BioMed Central, 2006.