University of Sheffield. Centre for Research on User Studies & Ford, G. (1978). Report of the director: For the period 1st November 1975-28th February 1978. University of Sheffield, Centre for Research on User Studies.
Lua i Stíl Chicago (17ú heag.)University of Sheffield. Centre for Research on User Studies agus Geoffrey Ford. Report of the Director: For the Period 1st November 1975-28th February 1978. Sheffield: University of Sheffield, Centre for Research on User Studies, 1978.
Lua MLA (8ú heag.)University of Sheffield. Centre for Research on User Studies agus Geoffrey Ford. Report of the Director: For the Period 1st November 1975-28th February 1978. University of Sheffield, Centre for Research on User Studies, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.