Leon, A. (2008). ERP: Demystified (2nd.). Tata McGraw Hill.
Chicago-čujuhus (17. p.)Leon, Alexis. ERP: Demystified. 2nd. Tata McGraw Hill, 2008.
MLA-čujuhus (9. p.)Leon, Alexis. ERP: Demystified. 2nd. Tata McGraw Hill, 2008.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.