Tillmann, G. (1993). A practical guide to logical data modeling. McGraw-Hill.
Cita Chicago (17th ed.)Tillmann, George. A Practical Guide to Logical Data Modeling. Nueva York: McGraw-Hill, 1993.
Cita MLA (9th ed.)Tillmann, George. A Practical Guide to Logical Data Modeling. McGraw-Hill, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.