Groff James R. (2018). SQL: Complete Reference (3rd.). McGraw Hill.
Cita Chicago (17th ed.)Groff James R. SQL: Complete Reference. 3rd. McGraw Hill, 2018.
Cita MLA (9th ed.)Groff James R. SQL: Complete Reference. 3rd. McGraw Hill, 2018.
Atenció: Aquestes cites poden no estar 100% correctes.