APA
Sepulveda W., Peek M. J., Hassan J. & Hollingsworth J. (19961226). Umbilical vein to artery ratio in fetuses with single umbilical artery. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.
Chicago
Sepulveda W, Peek M J, Hassan J and Hollingsworth J. 19961226. Umbilical vein to artery ratio in fetuses with single umbilical artery. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.
Harvard
Sepulveda W., Peek M. J., Hassan J. and Hollingsworth J. (19961226). Umbilical vein to artery ratio in fetuses with single umbilical artery. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.
MLA
Sepulveda W, Peek M J, Hassan J and Hollingsworth J. Umbilical vein to artery ratio in fetuses with single umbilical artery. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology. 19961226.