APA

oleary t. j., oleary l. i., .computing essentials 2005. new york: mcgraw-hill international edition.

Chicago

oleary timothy j, oleary linda i, .computing essentials 2005. new york: mcgraw-hill international edition.

Harvard

oleary t. j., oleary l. i., .computing essentials 2005. new york: mcgraw-hill international edition.

MLA

oleary timothy j, oleary linda i, .new york: mcgraw-hill international edition. .