APA
Sarris I., Ioannou C., Chamberlain P., Ohuma E., Roseman F., Hoch L., Altman D. G. & Papageorghiou A. T. (20120808). Intra- and interobserver variability in fetal ultrasound measurements. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.
Chicago
Sarris I, Ioannou C, Chamberlain P, Ohuma E, Roseman F, Hoch L, Altman D G and Papageorghiou A T. 20120808. Intra- and interobserver variability in fetal ultrasound measurements. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.
Harvard
Sarris I., Ioannou C., Chamberlain P., Ohuma E., Roseman F., Hoch L., Altman D. G. and Papageorghiou A. T. (20120808). Intra- and interobserver variability in fetal ultrasound measurements. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.
MLA
Sarris I, Ioannou C, Chamberlain P, Ohuma E, Roseman F, Hoch L, Altman D G and Papageorghiou A T. Intra- and interobserver variability in fetal ultrasound measurements. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology. 20120808.