Lipnick, R., Buring, J., Hennekens, C., Rosner, B., Willett, W., Bain, C., . . . Speizer, F. (1986). Oral contraceptives and breast cancer. A prospective cohort study.
Chicago-viite (17. p.)Lipnick, R., et al. Oral Contraceptives and Breast Cancer. A Prospective Cohort Study. 1986.
MLA-viite (9. p.)Lipnick, R., et al. Oral Contraceptives and Breast Cancer. A Prospective Cohort Study. 1986.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.