Gaya APA
O'Brien, J, A. (2007).
Introduction to Information Systems : Essentials for the e-Business Enterprise (Edisi Kesebelas).
:
McGraw-Hill.
Gaya MLA
O'Brien, James, A..
"Introduction to Information Systems : Essentials for the e-Business Enterprise".
Edisi Kesebelas
:
McGraw-Hill,
2007.
Text.