Gaya APA
O'Leary, T, J., O'Leary, L, I.
(2002).
Computing Essentials
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:
Mc Graw Hill.
Gaya MLA
O'Leary, Timothy, J.., O'Leary, Linda, I..
"Computing Essentials".
:
Mc Graw Hill,
2002.
Text.