Gaya APA

O'Leary, T, J., Williams, B, K. (1989). Study Guide For Computers And Information Systems (Kedua). Canada: The Benjamin/ Cummings Publishing Company, Inc.

Gaya MLA

O'Leary, Timothy, J.., Williams, Brian, K.. "Study Guide For Computers And Information Systems". Kedua Canada: The Benjamin/ Cummings Publishing Company, Inc, 1989. Text.