Gaya APA
Marakas, G, M., O'Brien, J, A.
(2010).
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(
15)
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New York:
Mc Graw Hill.
Gaya MLA
Marakas, George, M.., O'Brien, James, A..
"Introduction to Information Systems".
15
New York:
Mc Graw Hill,
2010.
Text.