APA引文

Hayen Roger. (2006). SAP R/3 Enterprise Software: An Introduction. American: MC Graw Hill.

Trích dẫn kiểu Chicago

Hayen Roger. SAP R/3 Enterprise Software: An Introduction. American: MC Graw Hill, 2006.

MLA引文

Hayen Roger. SAP R/3 Enterprise Software: An Introduction. American: MC Graw Hill, 2006.

警告：這些引文格式不一定是100％准確.