Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.