Levenson, F. B. (1984). The causes and prevention of cancer. Stein and Day.
Lua i Stíl Chicago (17ú heag.)Levenson, Fraderick B. The Causes and Prevention of Cancer. Stein and Day, 1984.
Lua MLA (9ú heag.)Levenson, Fraderick B. The Causes and Prevention of Cancer. Stein and Day, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.