Não informado. (1976). Advance Data from Vital & Health Statistics. National Center for Health Statistics.
Lua i Stíl Chicago (17ú heag.)Não informado. Advance Data from Vital & Health Statistics. Hyattsville, Md: National Center for Health Statistics, 1976.
Lua MLA (8ú heag.)Não informado. Advance Data from Vital & Health Statistics. National Center for Health Statistics, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.