Não informado. (1985). Health promotion. Health Promotion Directorate.
Chicago (17e ed.) BronvermeldingNão informado. Health Promotion. Ottawa: Health Promotion Directorate, 1985.
MLA (8e ed.) BronvermeldingNão informado. Health Promotion. Health Promotion Directorate, 1985.
Let op: Deze citaties zijn niet altijd 100% accuraat.