Cita APA (7a ed.)

Vecchiolla, F. J., & Maza, P. L. (1989). Pregnant and parenting adolescents: A study of services. Child Welfare League of America.

Cita Chicago Style (17a ed.)

Vecchiolla, Francine J., y Penelope L. Maza. Pregnant and Parenting Adolescents: A Study of Services. Washington, DC: Child Welfare League of America, 1989.

Cita MLA (9a ed.)

Vecchiolla, Francine J., y Penelope L. Maza. Pregnant and Parenting Adolescents: A Study of Services. Child Welfare League of America, 1989.