Cita APA (7a ed.)

Calvert, C., & Ronsmans, C. (2013). HIV and the risk of direct obstetric complications: A systematic review and meta-analysis. Public Library of Science (PLoS).

Cita Chicago Style (17a ed.)

Calvert, Clara, y Carine Ronsmans. HIV and the Risk of Direct Obstetric Complications: A Systematic Review and Meta-analysis. Public Library of Science (PLoS), 2013.

Cita MLA (8a ed.)

Calvert, Clara, y Carine Ronsmans. HIV and the Risk of Direct Obstetric Complications: A Systematic Review and Meta-analysis. Public Library of Science (PLoS), 2013.