APA (7th ed.) Citation

MJ, C., H, P., & MD, C. (2018). Controversies in family planning: Persistently elevated serum human chorionic gonadotropin levels after aspiration abortion. Contraception, 98(6), 541. https://doi.org/10.1016/j.contraception.2018.07.136

Chicago Style (17th ed.) Citation

MJ, Chen, Pymar H, and Creinin MD. "Controversies in Family Planning: Persistently Elevated Serum Human Chorionic Gonadotropin Levels After Aspiration Abortion." Contraception 98, no. 6 (2018): 541. https://doi.org/10.1016/j.contraception.2018.07.136.

MLA (9th ed.) Citation

MJ, Chen, et al. "Controversies in Family Planning: Persistently Elevated Serum Human Chorionic Gonadotropin Levels After Aspiration Abortion." Contraception, vol. 98, no. 6, 2018, p. 541, https://doi.org/10.1016/j.contraception.2018.07.136.