Cita APA (7a ed.)
(1978). <The> Elderly population: 1976 : estimates by county. U. S. Department of health, educationaad welfare.
Cita Chicago Style (17a ed.)
<The> Elderly Population: 1976 : Estimates by County. Washington: U. S. Department of health, educationaad welfare, 1978.
Cita MLA (9a ed.)
<The> Elderly Population: 1976 : Estimates by County. U. S. Department of health, educationaad welfare, 1978.
Precaución: Estas citas no son 100% exactas.