APA (7th ed.) Citation

James, J., & Pymar, H. (2014). Is ultrasound needed for women with beta-HCG of less than 500 mIU/mL? Contraception, 90(3), 343. https://doi.org/10.1016/j.contraception.2014.05.176

Chicago Style (17th ed.) Citation

James, J., and H. Pymar. "Is Ultrasound Needed for Women with Beta-HCG of Less than 500 MIU/mL?" Contraception 90, no. 3 (2014): 343. https://doi.org/10.1016/j.contraception.2014.05.176.

MLA (9th ed.) Citation

James, J., and H. Pymar. "Is Ultrasound Needed for Women with Beta-HCG of Less than 500 MIU/mL?" Contraception, vol. 90, no. 3, 2014, p. 343, https://doi.org/10.1016/j.contraception.2014.05.176.