Scharffenberg, J. A. (1980). Cancer prevention. Pacific Health Education Center.
Lua i Stíl Chicago (17ú heag.)Scharffenberg, J. A. Cancer Prevention. Pacific Health Education Center, 1980.
Lua MLA (9ú heag.)Scharffenberg, J. A. Cancer Prevention. Pacific Health Education Center, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.