APA (7e ed.) Bronvermelding

Ministry of Health. (1997). National Immunization day.

Chicago (17e ed.) Bronvermelding

Ministry of Health. National Immunization Day. 1997.

MLA (8e ed.) Bronvermelding

Ministry of Health. National Immunization Day. 1997.

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