Citazione Stile APA (7a Edizione)

Kayem, G., Kurinczuk, J., Lewis, G., Golightly, S., Brocklehurst, P., & Knight, M. (2011). Risk factors for progression from severe maternal morbidity to death: A national cohort study. Public Library of Science.

Citazione stile Chigago Style (17a edizione)

Kayem, G., J. Kurinczuk, G. Lewis, S. Golightly, P. Brocklehurst, e M. Knight. Risk Factors for Progression from Severe Maternal Morbidity to Death: A National Cohort Study. Public Library of Science, 2011.

Citatione MLA (9a ed.)

Kayem, G., et al. Risk Factors for Progression from Severe Maternal Morbidity to Death: A National Cohort Study. Public Library of Science, 2011.