Dyfyniad APA

(1998). Autism and pervasive developmental disorders. Cambrige: Cambrige University Press.

Dyfyniad Arddull Chicago

Autism and Pervasive Developmental Disorders. Cambrige: Cambrige University Press, 1998.

Dyfyniad MLA

Autism and Pervasive Developmental Disorders. Cambrige: Cambrige University Press, 1998.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.