Hill, A. G., & Graham, W. J. (1988). West African sources of health and mortality information: A comparative review. International Development Research Centre.
Citace podle Chicago (17th ed.)Hill, Allan G., a Wendy J. Graham. West African Sources of Health and Mortality Information: A Comparative Review. Ottawa, Ont: International Development Research Centre, 1988.
Citace podle MLA (9th ed.)Hill, Allan G., a Wendy J. Graham. West African Sources of Health and Mortality Information: A Comparative Review. International Development Research Centre, 1988.
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