Cita APA (7a ed.)

Harrington, J. L. (2003). SQL: Clearly explained (2nd ed.). Morgan kaufmann Publishers.

Cita Chicago Style (17a ed.)

Harrington, Jan L. SQL: Clearly Explained. 2nd ed. Amsterdam ; New York: Morgan kaufmann Publishers, 2003.

Cita MLA (9a ed.)

Harrington, Jan L. SQL: Clearly Explained. 2nd ed. Morgan kaufmann Publishers, 2003.