Citação norma APA

Murphy, V. E., Clifton, V. L., & Gibson, P. G. (2006). Asthma exacerbations during pregnancy: Incidence and association with adverse pregnancy outcomes. BMJ Group.

Citação norma Chicago

Murphy, V E., V L. Clifton, and P G. Gibson. Asthma Exacerbations During Pregnancy: Incidence and Association With Adverse Pregnancy Outcomes. BMJ Group, 2006.

Citação norma MLA

Murphy, V E., V L. Clifton, and P G. Gibson. Asthma Exacerbations During Pregnancy: Incidence and Association With Adverse Pregnancy Outcomes. BMJ Group, 2006.

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