Cita APA (7th ed.)

Dietrich, S. W. (2001). Understanding relational database query languages. Prentice Hall.

Cita Chicago (17th ed.)

Dietrich, Suzanne W. Understanding Relational Database Query Languages. New Jersey: Prentice Hall, 2001.

Cita MLA (8th ed.)

Dietrich, Suzanne W. Understanding Relational Database Query Languages. Prentice Hall, 2001.