Ministry of Health. (1997). National Immunization day.
Lua i Stíl Chicago (17ú heag.)Ministry of Health. National Immunization Day. 1997.
Lua MLA (8ú heag.)Ministry of Health. National Immunization Day. 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.