Cita APA

Souza, J. P., Gülmezoglu, A. M., Carroli, G., Lumbiganon, P., & Qureshi, Z. (2011). The world health organization multicountry survey on maternal and newborn health: Study protocol. BioMed Central.

Citación estilo Chicago

Souza, João Paulo, Ahmet Metin Gülmezoglu, Guillermo Carroli, Pisake Lumbiganon, y Zahida Qureshi. The World Health Organization Multicountry Survey On Maternal and Newborn Health: Study Protocol. BioMed Central, 2011.

Cita MLA

Souza, João Paulo, et al. The World Health Organization Multicountry Survey On Maternal and Newborn Health: Study Protocol. BioMed Central, 2011.