APA

O'Leary T. J., O'Leary L. I., . (1997). McGraw-Hill computing essentials, 1997-1998: brief version. New York: McGraw-Hill.

Chicago

O'Leary T J, O'Leary Linda I, . 1997. McGraw-Hill computing essentials, 1997-1998: brief version. New York: McGraw-Hill.

Harvard

O'Leary T. J., O'Leary L. I., . (1997). McGraw-Hill computing essentials, 1997-1998: brief version. New York: McGraw-Hill.

MLA

O'Leary T J, O'Leary Linda I, . McGraw-Hill computing essentials, 1997-1998: brief version. New York: McGraw-Hill. 1997.