Kamugisha, M. L., Gesase, S., Minja, D., Mgema, S., Mlwilo, T. D. and Mayala, B. K. (2007) “Pattern and spatial distribution of plague in Lushoto, north-eastern Tanzania”, Tanzania Journal of Health Research, 9(1), pp. 12–18. doi: 10.4314/thrb.v9i1.14286.