APA

Hoopmann M., Sonek J., Esser T., Bilardo C. M., Wagner P., Abele H. & Kagan K. O. (20170626). Frontal space distance in facial clefts and retrognathia at 11-13 weeks' gestation. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Chicago

Hoopmann M, Sonek J, Esser T, Bilardo C M, Wagner P, Abele H and Kagan K O. 20170626. Frontal space distance in facial clefts and retrognathia at 11-13 weeks' gestation. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Harvard

Hoopmann M., Sonek J., Esser T., Bilardo C. M., Wagner P., Abele H. and Kagan K. O. (20170626). Frontal space distance in facial clefts and retrognathia at 11-13 weeks' gestation. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

MLA

Hoopmann M, Sonek J, Esser T, Bilardo C M, Wagner P, Abele H and Kagan K O. Frontal space distance in facial clefts and retrognathia at 11-13 weeks' gestation. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology. 20170626.