Sage, A. P. (1990). Concise encyclopedia of information processing in systems & organizations. Pergamon Press.
Lua i Stíl Chicago (17ú heag.)Sage, Andrew P. Concise Encyclopedia of Information Processing in Systems & Organizations. Oxford: Pergamon Press, 1990.
Lua MLA (9ú heag.)Sage, Andrew P. Concise Encyclopedia of Information Processing in Systems & Organizations. Pergamon Press, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.