SPENCER, D. D., & SPENCER, D. D. (1982). Data Processing An Introduction/Donald D.spencer. A Bell & howell.
Lua i Stíl Chicago (17ú heag.)SPENCER, Donald D., agus Donald D. SPENCER. Data Processing An Introduction/Donald D.spencer. A Bell & howell, 1982.
Lua MLA (8ú heag.)SPENCER, Donald D., agus Donald D. SPENCER. Data Processing An Introduction/Donald D.spencer. A Bell & howell, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.