Samuel H. Preston. The Changing Relation between Mortality and Level of Economic Development. The World Health Organization.
Chicago Style (17th ed.) CitationSamuel H. Preston. The Changing Relation Between Mortality and Level of Economic Development. The World Health Organization.
MLA (9th ed.) CitationSamuel H. Preston. The Changing Relation Between Mortality and Level of Economic Development. The World Health Organization.
Warning: These citations may not always be 100% accurate.