Não informado. (1971). American Journal of Public Health. American Public Health Association.
Cita Chicago Style (17a ed.)Não informado. American Journal of Public Health. Washington: American Public Health Association, 1971.
Cita MLA (8a ed.)Não informado. American Journal of Public Health. American Public Health Association, 1971.
Precaución: Estas citas no son 100% exactas.