Journal Article
Guijarro, Susana, Jorge Naranjo, Mónica Padilla, Richardo Gutiérez,, Cristina Lammers, and Robert W Blum.
"Family Risk Factors Associated with Adolescent Pregnancy: Study of a Group of Adolescent Girls and their Families in Ecuador." Journal of Adolescent Health 25, no. 2 (1999): 166-172.