Wade, N. (1998). DNA breakthrough offers hope for syphilis vaccine. Today.
Lua i Stíl Chicago (17ú heag.)Wade, Nicholas. "DNA Breakthrough Offers Hope for Syphilis Vaccine." Today 1998.
Lua MLA (9ú heag.)Wade, Nicholas. "DNA Breakthrough Offers Hope for Syphilis Vaccine." Today, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.