Beral, V., & Reeves, G. (1998). Breast cancer and combined oral contraceptives: Results from the Collaborative Group on Hormonal Factors in Breast Cancer.
Cita Chicago (17th ed.)Beral, V., i G. Reeves. Breast Cancer and Combined Oral Contraceptives: Results from the Collaborative Group on Hormonal Factors in Breast Cancer. 1998.
Cita MLA (9th ed.)Beral, V., i G. Reeves. Breast Cancer and Combined Oral Contraceptives: Results from the Collaborative Group on Hormonal Factors in Breast Cancer. 1998.
Atenció: Aquestes cites poden no estar 100% correctes.