Dyfyniad APA

Oppel, A. (2011). SQL Demystified. McGraw-Hill Companies.

Dyfyniad Arddull Chicago

Oppel, Andrew. SQL Demystified. McGraw-Hill Companies, 2011.

Dyfyniad MLA

Oppel, Andrew. SQL Demystified. McGraw-Hill Companies, 2011.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.