Cita APA (7a ed.)

Parkin, L., Sweetland, S., Balkwill, A., Green, J., Reeves, G., & Beral, V. (2012). Body mass index, surgery, and risk of venous thromboembolism in middle-aged women: A cohort study.

Cita Chicago Style (17a ed.)

Parkin, L., S. Sweetland, A. Balkwill, J. Green, G. Reeves, y V. Beral. Body Mass Index, Surgery, and Risk of Venous Thromboembolism in Middle-aged Women: A Cohort Study. 2012.

Cita MLA (9a ed.)

Parkin, L., et al. Body Mass Index, Surgery, and Risk of Venous Thromboembolism in Middle-aged Women: A Cohort Study. 2012.