Cita APA (7th ed.)

D'ORAZIO, R., & HAPPEL, G. (1996). Pratical data modelling for database desiggn. John Wiley and Sons.

Cita Chicago (17th ed.)

D'ORAZIO, Renzo, i Gunter HAPPEL. Pratical Data Modelling for Database Desiggn. New York: John Wiley and Sons, 1996.

Cita MLA (9th ed.)

D'ORAZIO, Renzo, i Gunter HAPPEL. Pratical Data Modelling for Database Desiggn. John Wiley and Sons, 1996.