Leon Alexis & Leon Mathews. (1999). Database Management Systems. Leon Press.
Chicago-čujuhus (17. p.)Leon Alexis juo Leon Mathews. Database Management Systems. Chennai: Leon Press, 1999.
MLA-čujuhus (9. p.)Leon Alexis juo Leon Mathews. Database Management Systems. Leon Press, 1999.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.