Gaya APA

Ruskin, M, S, E. (1999). Continuity and change in the social competence of children with autism, down syndrome and developmental delays. -- Monographs of the society for research in child development . Malden: Blackwell Publisher, Inc..

Gaya MLA

Ruskin, Marian, Sigman,, Ellen. "Continuity and change in the social competence of children with autism, down syndrome and developmental delays. -- Monographs of the society for research in child development". Malden: Blackwell Publisher, Inc., 1999. Text.