Cita APA

Casas, J., Chumbe, O., Inguil, R., Gonzales, L., & Mercado, F. (2015). The teen birth. 3 study groups early, late adolescence and control group.

Citación estilo Chicago

Casas, Johnny, Ovidio Chumbe, Rosario Inguil, Luis Gonzales, y Francisco Mercado. The Teen Birth. 3 Study Groups Early, Late Adolescence and Control Group. 2015.

Cita MLA

Casas, Johnny, et al. The Teen Birth. 3 Study Groups Early, Late Adolescence and Control Group. 2015.