Boslaugh, S. (2007). Secondary data sources for public health: A practical guide. Cambridge University Press.
Chicago-viite (17. p.)Boslaugh, Sarah. Secondary Data Sources for Public Health: A Practical Guide. Cambridge ; New York: Cambridge University Press, 2007.
MLA-viite (8. p.)Boslaugh, Sarah. Secondary Data Sources for Public Health: A Practical Guide. Cambridge University Press, 2007.
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