Zero to Three (Organization) & National Center for Clinical Infant Programs (U.S.). Zero to three. National Center for Clinical Infant Programs.
Chicago-referens (17:e uppl.)Zero to Three (Organization) och National Center for Clinical Infant Programs (U.S.). Zero to Three. Washington, D.C.: National Center for Clinical Infant Programs.
MLA-referens (9:e uppl.)Zero to Three (Organization) och National Center for Clinical Infant Programs (U.S.). Zero to Three. National Center for Clinical Infant Programs.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.