APA
Cawyer C. R., Anderson S. B., Szychowski J. M., Neely C. & Owen J. (20180917). Estimating Gestational Age With Sonography: Regression-Derived Formula Versus the Fetal Biometric Average. : Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine.
Chicago
Cawyer Chase R, Anderson Sarah B, Szychowski Jeff M, Neely Cherry and Owen John. 20180917. Estimating Gestational Age With Sonography: Regression-Derived Formula Versus the Fetal Biometric Average. : Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine.
Harvard
Cawyer C. R., Anderson S. B., Szychowski J. M., Neely C. and Owen J. (20180917). Estimating Gestational Age With Sonography: Regression-Derived Formula Versus the Fetal Biometric Average. : Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine.
MLA
Cawyer Chase R, Anderson Sarah B, Szychowski Jeff M, Neely Cherry and Owen John. Estimating Gestational Age With Sonography: Regression-Derived Formula Versus the Fetal Biometric Average. : Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine. 20180917.