Não informado. (2019). BMJ: British medical journal. BMJ Publishing.
Chicago (17e ed.) BronvermeldingNão informado. BMJ: British Medical Journal. London: BMJ Publishing, 2019.
MLA (8e ed.) BronvermeldingNão informado. BMJ: British Medical Journal. BMJ Publishing, 2019.
Let op: Deze citaties zijn niet altijd 100% accuraat.