Medin, D. L., & Nakamura, G. V. (1993). Categorization by humans and machines. Academic.
Lua i Stíl Chicago (17ú heag.)Medin, Douglas L., agus Glenn V. Nakamura. Categorization by Humans and Machines. San Diego: Academic, 1993.
Lua MLA (9ú heag.)Medin, Douglas L., agus Glenn V. Nakamura. Categorization by Humans and Machines. Academic, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.