Peto, R., & Doll, R. (1977). WHEN IS SIGNIFICANT NOT SIGNIFICANT.
Lua i Stíl Chicago (17ú heag.)Peto, R., agus R. Doll. WHEN IS SIGNIFICANT NOT SIGNIFICANT. 1977.
Lua MLA (9ú heag.)Peto, R., agus R. Doll. WHEN IS SIGNIFICANT NOT SIGNIFICANT. 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.