Groff, J. (2008). SQL: The Complete Reference ,2008 (2 nd.). T M H.
Cita Chicago (17th ed.)Groff, James. SQL: The Complete Reference ,2008. 2 nd. New Delhi: T M H, 2008.
Cita MLA (9th ed.)Groff, James. SQL: The Complete Reference ,2008. 2 nd. T M H, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.