Não informado. (1979). Knowledge: Creation, diffusion, utilization. Sage Periodicals Press.
Lua i Stíl Chicago (17ú heag.)Não informado. Knowledge: Creation, Diffusion, Utilization. Thousand Oaks, Calif: Sage Periodicals Press, 1979.
Lua MLA (8ú heag.)Não informado. Knowledge: Creation, Diffusion, Utilization. Sage Periodicals Press, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.