APA

Tegnander E., Eik-Nes S. H. & Linker D. T. (20031008). Incorporating the four-chamber view of the fetal heart into the second-trimester routine fetal examination. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Chicago

Tegnander E, Eik-Nes S H and Linker D T. 20031008. Incorporating the four-chamber view of the fetal heart into the second-trimester routine fetal examination. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Harvard

Tegnander E., Eik-Nes S. H. and Linker D. T. (20031008). Incorporating the four-chamber view of the fetal heart into the second-trimester routine fetal examination. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

MLA

Tegnander E, Eik-Nes S H and Linker D T. Incorporating the four-chamber view of the fetal heart into the second-trimester routine fetal examination. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology. 20031008.