(1991). Control of chagas disease.
Lua i Stíl Chicago (17ú heag.)Control of Chagas Disease. 1991.
Lua MLA (9ú heag.)Control of Chagas Disease. 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)