APA citiranje

Hayen Roger. (2006). SAP R/3 Enterprise Software(photocopy). American: McGraw -Hill.

Trích dẫn kiểu Chicago

Hayen Roger. SAP R/3 Enterprise Software(photocopy). American: McGraw -Hill, 2006.

MLA citiranje

Hayen Roger. SAP R/3 Enterprise Software(photocopy). American: McGraw -Hill, 2006.

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