Παραπομπή σε μορφή APA (7η εκδ.)

Urbano, R. C., & Hodapp, R. M. (2007). Developmental Epidemiology of Mental Retardation and Developmental Disabilities. Academic Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Urbano, Richard C., και Robert M. Hodapp. Developmental Epidemiology of Mental Retardation and Developmental Disabilities. Amsterdam ; Boston: Academic Press, 2007.

Παραπομπή σε μορφή MLA (8th εκδ.)

Urbano, Richard C., και Robert M. Hodapp. Developmental Epidemiology of Mental Retardation and Developmental Disabilities. Academic Press, 2007.