Gaya APA

O'Leary, Timothy J., Williams, Brian K.. (1989). Study Guide For Computers And Information Systems (2rd. ed). California: THE BENJAMIN/CUMMINGS PUBLISHING.

Gaya Chicago

O'Leary, Timothy J., Williams, Brian K.. Study Guide For Computers And Information Systems. 2rd. ed California: THE BENJAMIN/CUMMINGS PUBLISHING, 1989. .

Gaya MLA

O'Leary, Timothy J., Williams, Brian K.. Study Guide For Computers And Information Systems. 2rd. ed California: THE BENJAMIN/CUMMINGS PUBLISHING, 1989. .

Gaya Turabian

O'Leary, Timothy J., Williams, Brian K.. Study Guide For Computers And Information Systems. 2rd. ed California: THE BENJAMIN/CUMMINGS PUBLISHING, 1989. .