Não informado. (1963). Vital and health statistics. National Center for Health Statistics.
Chicago (17e ed.) BronvermeldingNão informado. Vital and Health Statistics. Washington: National Center for Health Statistics, 1963.
MLA (8e ed.) BronvermeldingNão informado. Vital and Health Statistics. National Center for Health Statistics, 1963.
Let op: Deze citaties zijn niet altijd 100% accuraat.