Gaya APA
O\'Leary, T, J. (2013).
Computing essentials making IT work for you introductory 2013 .
New York:
Mc Graw Hill.
Gaya MLA
O\'Leary, Timothy, J.
"Computing essentials making IT work for you introductory 2013".
New York:
Mc Graw Hill,
2013.
Text.