Cita APA (7a ed.)

Beral, V., & Reeves, G. (1993). CHILDBEARING, ORAL-CONTRACEPTIVE USE, AND BREAST-CANCER.

Cita Chicago Style (17a ed.)

Beral, V., y G. Reeves. CHILDBEARING, ORAL-CONTRACEPTIVE USE, AND BREAST-CANCER. 1993.

Cita MLA (9a ed.)

Beral, V., y G. Reeves. CHILDBEARING, ORAL-CONTRACEPTIVE USE, AND BREAST-CANCER. 1993.