Barrero, C. (2000). Cardiologia 2000.
Lua i Stíl Chicago (17ú heag.)Barrero, C. Cardiologia 2000. 2000.
Lua MLA (9ú heag.)Barrero, C. Cardiologia 2000. 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)