APA Style

OBRIEN, J, A., Marakas, G, M. (2007). Enterprise Information Systems, 13th Ed. (13). Boston: McGraw-Hill/Irwin.

MLA Style

OBRIEN, JAMES, A.., Marakas, George, M.. "Enterprise Information Systems, 13th Ed.". 13 Boston: McGraw-Hill/Irwin, 2007. Text.