APA (7th ed.) Citation

H, V., L, O., C, D., P, P., & M, R. (2011). Risk factors for recurrence of venous thromboembolism associated with the use of oral contraceptives. Contraception, 84(5), e23.

Chicago Style (17th ed.) Citation

H, Vaillant-Roussel, Ouchchane L, Dauphin C, Philippe P, and Ruivard M. "Risk Factors for Recurrence of Venous Thromboembolism Associated with the Use of Oral Contraceptives." Contraception 84, no. 5 (2011): e23.

MLA (9th ed.) Citation

H, Vaillant-Roussel, et al. "Risk Factors for Recurrence of Venous Thromboembolism Associated with the Use of Oral Contraceptives." Contraception, vol. 84, no. 5, 2011, p. e23.