APA
Curran T., Keller G. & Ladd A. (1998). SAP R/3 business blueprint : understanding the business process reference model. Upper Saddle River, N.J: Prentice Hall PTR.
Chicago
Curran Thomas, Keller Gerhard and Ladd Andrew. 1998. SAP R/3 business blueprint : understanding the business process reference model. Upper Saddle River, N.J: Prentice Hall PTR.
Harvard
Curran T., Keller G. and Ladd A. (1998). SAP R/3 business blueprint : understanding the business process reference model. Upper Saddle River, N.J: Prentice Hall PTR.
MLA
Curran Thomas, Keller Gerhard and Ladd Andrew. SAP R/3 business blueprint : understanding the business process reference model. Upper Saddle River, N.J: Prentice Hall PTR. 1998.