APA
Groff J. W. P. O. A., . (2013). SQL : the complete reference.-3rd ed. McGraw Hill Education Pvt. Ltd: New Delhi.
Chicago
Groff James Weinberg Paul Oppel Andrew, . 2013. SQL : the complete reference.-3rd ed. McGraw Hill Education Pvt. Ltd: New Delhi.
Harvard
Groff J. W. P. O. A., . (2013). SQL : the complete reference.-3rd ed. McGraw Hill Education Pvt. Ltd: New Delhi.
MLA
Groff James Weinberg Paul Oppel Andrew, . SQL : the complete reference.-3rd ed. McGraw Hill Education Pvt. Ltd: New Delhi. 2013.