Dowling, K. N. (2008). SAP Project System Handbook. Tata McGraw Hill Publishing Company Ltd.
Chicago-čujuhus (17. p.)Dowling, Kieron N. SAP Project System Handbook. New Delhi: Tata McGraw Hill Publishing Company Ltd, 2008.
MLA-čujuhus (9. p.)Dowling, Kieron N. SAP Project System Handbook. Tata McGraw Hill Publishing Company Ltd, 2008.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.