Wilmoth, J., Mathers, C., Say, L., & Mills, S. (2010). Maternal deaths drop by one-third from 1990 to 2008: A United Nations analysis. World Health Organization.
Styl cytowania ChicagoWilmoth, John, Colin Mathers, Lale Say, i Samuel Mills. Maternal Deaths Drop By One-third From 1990 to 2008: A United Nations Analysis. World Health Organization, 2010.
Styl cytowania MLAWilmoth, John, Colin Mathers, Lale Say, i Samuel Mills. Maternal Deaths Drop By One-third From 1990 to 2008: A United Nations Analysis. World Health Organization, 2010.
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