Kumin, L. (2012). Early communication skills for children with down syndrome: A guide for parents and professionals (Third edition.). Woodbinehouse.
Cita Chicago (17th ed.)Kumin, Libby. Early Communication Skills for Children with Down Syndrome: A Guide for Parents and Professionals. Third edition. Bethesda, MD: Woodbinehouse, 2012.
Cita MLA (9th ed.)Kumin, Libby. Early Communication Skills for Children with Down Syndrome: A Guide for Parents and Professionals. Third edition. Woodbinehouse, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.