(2003). SQL: Clearly explained / Jan L. Harrington.
Cita Chicago (17th ed.)SQL: Clearly Explained / Jan L. Harrington. 2003.
Cita MLA (9th ed.)SQL: Clearly Explained / Jan L. Harrington. 2003.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)