Não informado. (1978). Journal of Epidemiology and Community Health. British Medical Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of Epidemiology and Community Health. London: British Medical Association, 1978.
Lua MLA (8ú heag.)Não informado. Journal of Epidemiology and Community Health. British Medical Association, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.