Cita APA (7th ed.)

Pratt, P. J. (2003). A guide to SQL (6th ed.). Thomson Learning.

Cita Chicago (17th ed.)

Pratt, Philip J. A Guide to SQL. 6th ed. Boston, Mass: Thomson Learning, 2003.

Cita MLA (9th ed.)

Pratt, Philip J. A Guide to SQL. 6th ed. Thomson Learning, 2003.