Gaya APA

Wallace, T, F., Kremzar, M, H. (2001). ERP : making it happen : the implementers' guide to success with enterprise resource planning . New York: John Wiley & Sons.

Gaya MLA

Wallace, Thomas, F.., Kremzar, Michael, H.. "ERP : making it happen : the implementers' guide to success with enterprise resource planning". New York: John Wiley & Sons, 2001. Text.