Cita APA (7a ed.)

Keller, G., & Teufel, T. (1998). SAP R/3 process-oriented implementation: : iterative process prototyping. Addison Wesley : Longman.

Cita Chicago Style (17a ed.)

Keller, Gerhard, y Thomas Teufel. SAP R/3 Process-oriented Implementation: : Iterative Process Prototyping. Harlow: Addison Wesley : Longman, 1998.

Cita MLA (9a ed.)

Keller, Gerhard, y Thomas Teufel. SAP R/3 Process-oriented Implementation: : Iterative Process Prototyping. Addison Wesley : Longman, 1998.