Não informado. (1971). Leptospirosis surveillance. Center for Disease Control.
Lua i Stíl Chicago (17ú heag.)Não informado. Leptospirosis Surveillance. Atlanta, Ga: Center for Disease Control, 1971.
Lua MLA (8ú heag.)Não informado. Leptospirosis Surveillance. Center for Disease Control, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.