International Society on Early Intervention. (1988). Infants and Young Children. Aspen Publishers.
Citação do estilo Chicago (17ª ed.)International Society on Early Intervention. Infants and Young Children. Frederick, Md: Aspen Publishers, 1988.
Citação MLA (8ª ed.)International Society on Early Intervention. Infants and Young Children. Aspen Publishers, 1988.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.