APA
Klaij F. A., Geirsson R. T., Nielsen H., Hreinsdóttir M. & Haraldsdóttir K. R. (19981204). Humerospinous distance measurements: accuracy and usefulness for predicting shoulder dystocia in delivery at term. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.
Chicago
Klaij F A, Geirsson R T, Nielsen H, Hreinsdóttir M and Haraldsdóttir K R. 19981204. Humerospinous distance measurements: accuracy and usefulness for predicting shoulder dystocia in delivery at term. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.
Harvard
Klaij F. A., Geirsson R. T., Nielsen H., Hreinsdóttir M. and Haraldsdóttir K. R. (19981204). Humerospinous distance measurements: accuracy and usefulness for predicting shoulder dystocia in delivery at term. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.
MLA
Klaij F A, Geirsson R T, Nielsen H, Hreinsdóttir M and Haraldsdóttir K R. Humerospinous distance measurements: accuracy and usefulness for predicting shoulder dystocia in delivery at term. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology. 19981204.