Natividad, Fara Vanessa D., I.T. bytes book 1/ Fara Vanessa D. Natividad. - Quezon City: C & E Publishing, Inc., 2011. - 356 pages ; colored illustrations, tables; 26 cm. Includes Bibliographical References. English ISBN: 9789715849623 Dewey Class. No.: 004.1 / N19