APA (7e ed.) Bronvermelding

Não informado. (2004). Harvard School of Public Health. Harvard School of Public Health.

Chicago (17e ed.) Bronvermelding

Não informado. Harvard School of Public Health. Cambridge, Inglaterra: Harvard School of Public Health, 2004.

MLA (8e ed.) Bronvermelding

Não informado. Harvard School of Public Health. Harvard School of Public Health, 2004.

Let op: Deze citaties zijn niet altijd 100% accuraat.