Kroenke, D. (1990). Business computer systems: An introduction (4th ed.). McGraw- Hill.
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Chicago-čujuhus (17. p.)
Kroenke, David. Business Computer Systems: An Introduction. 4th ed. New York: McGraw- Hill, 1990.
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MLA-čujuhus (9. p.)
Kroenke, David. Business Computer Systems: An Introduction. 4th ed. McGraw- Hill, 1990.
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