Population Reports: Population Information Program. The John Hopkims Universtity School of Hygiene and Public Health. Population Information Program.
Lua i Stíl Chicago (17ú heag.)Population Reports: Population Information Program. The John Hopkims Universtity School of Hygiene and Public Health. Maryland, Estados Unidos: Population Information Program.
Lua MLA (9ú heag.)Population Reports: Population Information Program. The John Hopkims Universtity School of Hygiene and Public Health. Population Information Program.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.