Tohutoro APA (7th ed.)
O'Brien, J. A. (2005). Introduction to information systems (12th ed.). McGraw Hill.
Tohutoru Kātū Chicago (17th ed.)
O'Brien, James A. Introduction to Information Systems. 12th ed. Boston: McGraw Hill, 2005.
Tohutoro MLA (9th ed.)
O'Brien, James A. Introduction to Information Systems. 12th ed. McGraw Hill, 2005.
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