Citação norma APA

Churchill, D., Nair, M., Stanworth, S., & Knight, M. (2019). The change in haemoglobin concentration between the first and third trimesters of pregnancy: A population study. BioMed Central.

Citação norma Chicago

Churchill, D., M. Nair, S. Stanworth, and M. Knight. The Change in Haemoglobin Concentration Between the First and Third Trimesters of Pregnancy: A Population Study. BioMed Central, 2019.

Citação norma MLA

Churchill, D., et al. The Change in Haemoglobin Concentration Between the First and Third Trimesters of Pregnancy: A Population Study. BioMed Central, 2019.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.