Lawrence, O., & Hutchinson, D. (1990). Computer technology: Digital priniciples to interfacing (2nd ed.). McGraw-hill.
Lua i Stíl Chicago (17ú heag.)Lawrence, O.R, agus D.B Hutchinson. Computer Technology: Digital Priniciples to Interfacing. 2nd ed. Toronto: McGraw-hill, 1990.
Lua MLA (9ú heag.)Lawrence, O.R, agus D.B Hutchinson. Computer Technology: Digital Priniciples to Interfacing. 2nd ed. McGraw-hill, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.