Ford, G. (1978). UNISIST guidelines for the conduct of user studies. UNESCO.
Lua i Stíl Chicago (17ú heag.)Ford, Geoffrey. UNISIST Guidelines for the Conduct of User Studies. Paris: UNESCO, 1978.
Lua MLA (9ú heag.)Ford, Geoffrey. UNISIST Guidelines for the Conduct of User Studies. UNESCO, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.