APA (7th ed.) Citation

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.

Chicago Style (17th ed.) Citation

Beral, V., D. Bull, R. Doll, R. Peto, and 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.

MLA (9th ed.) Citation

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.