Simkin, M. G. (1987). Introduction to computer information systems for business. WCB.
Lua i Stíl Chicago (17ú heag.)Simkin, Mark G. Introduction to Computer Information Systems for Business. Iowa: WCB, 1987.
Lua MLA (9ú heag.)Simkin, Mark G. Introduction to Computer Information Systems for Business. WCB, 1987.
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