APA (7th ed.) Citation

AF, H., & DN, S. (2012). Screening for fetal aneuploidy: Is maternal age relevant? Clinical obstetrics and gynecology, 55(1), 217. https://doi.org/10.1097/GRF.0b013e3182488309

Chicago Style (17th ed.) Citation

AF, Hawk, and Saller DN. "Screening for Fetal Aneuploidy: Is Maternal Age Relevant?" Clinical Obstetrics and Gynecology 55, no. 1 (2012): 217. https://doi.org/10.1097/GRF.0b013e3182488309.

MLA (9th ed.) Citation

AF, Hawk, and Saller DN. "Screening for Fetal Aneuploidy: Is Maternal Age Relevant?" Clinical Obstetrics and Gynecology, vol. 55, no. 1, 2012, p. 217, https://doi.org/10.1097/GRF.0b013e3182488309.