APA
(2007). Preterm birth: mechanisms, mediators, prediction, prevention and interventions. United Kingdom: Informa health care.
Chicago
2007. Preterm birth: mechanisms, mediators, prediction, prevention and interventions. United Kingdom: Informa health care.
Harvard
(2007). Preterm birth: mechanisms, mediators, prediction, prevention and interventions. United Kingdom: Informa health care.
MLA
Preterm birth: mechanisms, mediators, prediction, prevention and interventions. United Kingdom: Informa health care. 2007.