एपीए उद्धरण

Harmsen, I. A., Mollema, L., Ruiter, R. A., Paulussen, T. G., de Melker, H. E., & Kok, G. (2013). Why parents refuse childhood vaccination: A qualitative study using online focus groups. BioMed Central.

शिकागो स्टाइल उद्धरण

Harmsen, Irene A., Liesbeth Mollema, Robert AC Ruiter, Theo GW Paulussen, Hester E. de Melker, और Gerjo Kok. Why Parents Refuse Childhood Vaccination: A Qualitative Study Using Online Focus Groups. BioMed Central, 2013.

एमएलए उद्धरण

Harmsen, Irene A., et al. Why Parents Refuse Childhood Vaccination: A Qualitative Study Using Online Focus Groups. BioMed Central, 2013.