Cita APA (7a ed.)

Beral, V., Bull, D., Doll, R., Peto, R., & Reeves, G. (2004). Breast cancer and abortion: Collaborative reanalysis of data from 53 epidemiological studies, including 83?000 women with breast cancer from 16 countries.

Cita Chicago Style (17a ed.)

Beral, V., D. Bull, R. Doll, R. Peto, y G. Reeves. Breast Cancer and Abortion: Collaborative Reanalysis of Data from 53 Epidemiological Studies, Including 83?000 Women with Breast Cancer from 16 Countries. 2004.

Cita MLA (9a ed.)

Beral, V., et al. Breast Cancer and Abortion: Collaborative Reanalysis of Data from 53 Epidemiological Studies, Including 83?000 Women with Breast Cancer from 16 Countries. 2004.