APA (7th ed.) Citation

Burchardt, N. A., Eliassen, A. H., Shafrir, A. L., Rosner, B., Tamimi, R. M., Kaaks, R., . . . Fortner, R. T. (2022). Oral contraceptive use by formulation and breast cancer risk by subtype in the Nurses' Health Study II: A prospective cohort study. American journal of obstetrics and gynecology, 226(6), . https://doi.org/10.1016/j.ajog.2021.12.022

Chicago Style (17th ed.) Citation

Burchardt, Norah Ana, A. Heather Eliassen, Amy L. Shafrir, Bernard Rosner, Rulla M. Tamimi, Rudolf Kaaks, Shelley S. Tworoger, and Renée T. Fortner. "Oral Contraceptive Use by Formulation and Breast Cancer Risk by Subtype in the Nurses' Health Study II: A Prospective Cohort Study." American Journal of Obstetrics and Gynecology 226, no. 6 (2022). https://doi.org/10.1016/j.ajog.2021.12.022.

MLA (9th ed.) Citation

Burchardt, Norah Ana, et al. "Oral Contraceptive Use by Formulation and Breast Cancer Risk by Subtype in the Nurses' Health Study II: A Prospective Cohort Study." American Journal of Obstetrics and Gynecology, vol. 226, no. 6, 2022, https://doi.org/10.1016/j.ajog.2021.12.022.