Não informado. (2004). Harvard School of Public Health. Harvard School of Public Health.
Lua i Stíl Chicago (17ú heag.)Não informado. Harvard School of Public Health. Cambridge, Inglaterra: Harvard School of Public Health, 2004.
Lua MLA (8ú heag.)Não informado. Harvard School of Public Health. Harvard School of Public Health, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.