(1997). Health United States 1996-97. Public Health Services.
Cita Chicago Style (17a ed.)Health United States 1996-97. Hyattsville, Md.: Public Health Services, 1997.
Cita MLA (8a ed.)Health United States 1996-97. Public Health Services, 1997.
Precaución: Estas citas no son 100% exactas.