Paul Wilton and John W.Colby. (2005). Beginning SQL (20th.). Wiley Pub.
Chicago-čujuhus (17. p.)Paul Wilton and John W.Colby. Beginning SQL. 20th. Wiley Pub, 2005.
MLA-čujuhus (9. p.)Paul Wilton and John W.Colby. Beginning SQL. 20th. Wiley Pub, 2005.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.