APA

Northrup M., Mendez-Castillo A., Sethi Y. & Churchill R. (20021104). Congenital absence of the portal vein with an intrahepatic inferior vena cava branch showing hepatopetal flow. : Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine.

Chicago

Northrup Mindy, Mendez-Castillo Alejandro, Sethi Yash and Churchill Robert. 20021104. Congenital absence of the portal vein with an intrahepatic inferior vena cava branch showing hepatopetal flow. : Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine.

Harvard

Northrup M., Mendez-Castillo A., Sethi Y. and Churchill R. (20021104). Congenital absence of the portal vein with an intrahepatic inferior vena cava branch showing hepatopetal flow. : Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine.

MLA

Northrup Mindy, Mendez-Castillo Alejandro, Sethi Yash and Churchill Robert. Congenital absence of the portal vein with an intrahepatic inferior vena cava branch showing hepatopetal flow. : Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine. 20021104.