SUMMERS, E. L. (1989). Accounting information systems. Houghton Mifflin Comp.
Lua i Stíl Chicago (17ú heag.)SUMMERS, Edward Lee. Accounting Information Systems. Dallas: Houghton Mifflin Comp, 1989.
Lua MLA (9ú heag.)SUMMERS, Edward Lee. Accounting Information Systems. Houghton Mifflin Comp, 1989.
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