Cita APA (7a ed.)

Leon, A. (2009). SQL: A Complete Reference , 2009. T M H.

Cita Chicago Style (17a ed.)

Leon, Alexis. SQL: A Complete Reference , 2009. New Delhi: T M H, 2009.

Cita MLA (9a ed.)

Leon, Alexis. SQL: A Complete Reference , 2009. T M H, 2009.