Cita APA (7a ed.)

Wehby, G. L., Murray, J. C., Castilla, E. E., López Camelo, J. S., & Ohsfeldt, R. L. (2009). Prenatal care effectiveness and utilization in Brazil.

Cita Chicago Style (17a ed.)

Wehby, George L., Jeffrey C. Murray, Eduardo Enrique Castilla, Jorge Santiago López Camelo, y Robert L. Ohsfeldt. Prenatal Care Effectiveness and Utilization in Brazil. 2009.

Cita MLA (8a ed.)

Wehby, George L., et al. Prenatal Care Effectiveness and Utilization in Brazil. 2009.