Não informado. (1979). Knowledge: Creation, diffusion, utilization. Sage Periodicals Press.
Chicago-referens (17:e uppl.)Não informado. Knowledge: Creation, Diffusion, Utilization. Thousand Oaks, Calif: Sage Periodicals Press, 1979.
MLA-referens (8:e uppl.)Não informado. Knowledge: Creation, Diffusion, Utilization. Sage Periodicals Press, 1979.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.