APA aipamena

Beral, V., & Reeves, G. (1993). Childbearing, oral contraceptive use, and breast cancer.

Chicago Style aipamena

Beral, V., and G. Reeves. Childbearing, Oral Contraceptive Use, and Breast Cancer. 1993.

MLA aipamena

Beral, V., and G. Reeves. Childbearing, Oral Contraceptive Use, and Breast Cancer. 1993.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.