Cita APA (7th ed.)
Viescas, J. (1989). Quick reference guide to SQL: The standard relational database language. Microsoft Corp..
Cita Chicago (17th ed.)
Viescas, John. Quick Reference Guide to SQL: The Standard Relational Database Language. Redmond, Wash.: Microsoft Corp., 1989.
Cita MLA (9th ed.)
Viescas, John. Quick Reference Guide to SQL: The Standard Relational Database Language. Microsoft Corp., 1989.
Atenció: Aquestes cites poden no estar 100% correctes.