Lucas, H. C. (1990). Information systems concepts for management (4th ed.). Mitchell McGraw-Hill.
Chicago-viite (17. p.)Lucas, Henry C. Information Systems Concepts for Management. 4th ed. New York: Mitchell McGraw-Hill, 1990.
MLA-viite (8. p.)Lucas, Henry C. Information Systems Concepts for Management. 4th ed. Mitchell McGraw-Hill, 1990.
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