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Kiepiela, P., H. M. Coovadia, W. E. Loening, P. Coward, G. Botha, J. Hugo, و P. J. Becker. Lack of Efficacy of the Standard Potency Edmonston-Zagreb Live, Attenuated Measles Vaccine in African Infants. World Health Organization, 1991.

Kiepiela, P., et al. Lack of Efficacy of the Standard Potency Edmonston-Zagreb Live, Attenuated Measles Vaccine in African Infants. World Health Organization, 1991.