Centers for Disease Control and prevention (U.S.) & International Clearinghouse for Birth Defects Monitoring System. Birth defects surveillance: A manual for programme managers. World Health Organization.
Lua i Stíl Chicago (17ú heag.)Centers for Disease Control and prevention (U.S.) agus International Clearinghouse for Birth Defects Monitoring System. Birth Defects Surveillance: A Manual for Programme Managers. Geneva: World Health Organization.
Lua MLA (8ú heag.)Centers for Disease Control and prevention (U.S.) agus International Clearinghouse for Birth Defects Monitoring System. Birth Defects Surveillance: A Manual for Programme Managers. World Health Organization.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.