Não informado. (1969). Data base. Association for Computing Machinery, Special Interest Group on Business Data Processing.
Lua i Stíl Chicago (17ú heag.)Não informado. Data Base. New York: Association for Computing Machinery, Special Interest Group on Business Data Processing, 1969.
Lua MLA (8ú heag.)Não informado. Data Base. Association for Computing Machinery, Special Interest Group on Business Data Processing, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.